./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:55:33,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:55:33,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:55:33,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:55:33,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:55:33,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:55:33,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:55:33,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:55:33,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:55:33,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:55:33,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:55:33,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:55:33,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:55:33,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:55:33,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:55:33,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:55:33,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:55:33,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:55:33,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:55:33,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:55:33,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:55:33,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:55:33,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:55:33,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:55:33,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:55:33,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:55:33,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:55:33,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:55:33,774 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:55:33,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:55:33,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:55:33,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:55:33,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:55:33,779 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:55:33,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:55:33,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:55:33,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:55:33,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:55:33,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:55:33,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:55:33,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:55:33,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 04:55:33,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:55:33,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:55:33,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:55:33,846 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:55:33,846 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:55:33,847 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:55:33,847 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:55:33,847 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:55:33,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:55:33,848 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:55:33,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:55:33,849 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:55:33,849 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:55:33,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:55:33,850 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:55:33,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:55:33,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:55:33,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:55:33,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:55:33,852 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:55:33,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:55:33,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:55:33,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:55:33,853 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:55:33,854 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:55:33,854 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:55:33,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:55:33,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:55:33,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:55:33,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:55:33,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:55:33,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:55:33,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:33,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:55:33,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:55:33,856 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:55:33,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:55:33,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:55:33,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:55:33,857 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_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2021-11-03 04:55:34,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:55:34,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:55:34,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:55:34,139 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:55:34,139 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:55:34,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-03 04:55:34,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/e31d626f5/6615621e307e49bcbdd6ce61e3422d64/FLAG1b9006e9e [2021-11-03 04:55:34,837 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:55:34,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-03 04:55:34,879 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/e31d626f5/6615621e307e49bcbdd6ce61e3422d64/FLAG1b9006e9e [2021-11-03 04:55:35,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/e31d626f5/6615621e307e49bcbdd6ce61e3422d64 [2021-11-03 04:55:35,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:55:35,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:55:35,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:35,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:55:35,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:55:35,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:35" (1/1) ... [2021-11-03 04:55:35,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39dee2f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:35, skipping insertion in model container [2021-11-03 04:55:35,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:35" (1/1) ... [2021-11-03 04:55:35,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:55:35,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:55:35,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-03 04:55:35,762 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_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-03 04:55:35,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:35,780 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 04:55:35,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f8f17c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:35, skipping insertion in model container [2021-11-03 04:55:35,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:35,782 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:55:35,784 INFO L168 Benchmark]: Toolchain (without parser) took 716.01 ms. Allocated memory is still 98.6 MB. Free memory was 62.8 MB in the beginning and 63.5 MB in the end (delta: -684.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:55:35,785 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 98.6 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:55:35,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.68 ms. Allocated memory is still 98.6 MB. Free memory was 62.6 MB in the beginning and 63.5 MB in the end (delta: -877.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:55:35,787 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 98.6 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 712.68 ms. Allocated memory is still 98.6 MB. Free memory was 62.6 MB in the beginning and 63.5 MB in the end (delta: -877.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:55:37,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:55:37,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:55:38,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:55:38,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:55:38,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:55:38,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:55:38,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:55:38,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:55:38,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:55:38,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:55:38,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:55:38,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:55:38,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:55:38,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:55:38,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:55:38,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:55:38,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:55:38,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:55:38,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:55:38,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:55:38,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:55:38,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:55:38,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:55:38,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:55:38,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:55:38,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:55:38,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:55:38,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:55:38,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:55:38,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:55:38,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:55:38,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:55:38,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:55:38,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:55:38,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:55:38,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:55:38,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:55:38,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:55:38,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:55:38,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:55:38,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 04:55:38,188 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:55:38,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:55:38,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:55:38,190 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:55:38,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:55:38,190 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:55:38,190 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:55:38,191 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:55:38,191 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:55:38,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 04:55:38,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 04:55:38,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:55:38,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:55:38,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:55:38,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:55:38,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:55:38,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:55:38,195 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 04:55:38,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 04:55:38,195 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 04:55:38,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:55:38,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:55:38,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:55:38,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:55:38,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:55:38,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:55:38,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:55:38,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:55:38,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:55:38,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:38,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:55:38,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:55:38,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:55:38,199 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:55:38,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:55:38,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:55:38,199 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_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2021-11-03 04:55:38,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:55:38,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:55:38,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:55:38,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:55:38,635 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:55:38,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-03 04:55:38,711 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/44a31e5a9/9a11d9b574894bf3bb13293b4265c8af/FLAG4acafcd3b [2021-11-03 04:55:39,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:55:39,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2021-11-03 04:55:39,360 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/44a31e5a9/9a11d9b574894bf3bb13293b4265c8af/FLAG4acafcd3b [2021-11-03 04:55:39,536 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/data/44a31e5a9/9a11d9b574894bf3bb13293b4265c8af [2021-11-03 04:55:39,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:55:39,540 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:55:39,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:39,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:55:39,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:55:39,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:39" (1/1) ... [2021-11-03 04:55:39,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376038e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:39, skipping insertion in model container [2021-11-03 04:55:39,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:55:39" (1/1) ... [2021-11-03 04:55:39,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:55:39,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:55:40,048 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_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-03 04:55:40,203 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_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-03 04:55:40,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:40,224 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:55:40,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:55:40,288 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_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-03 04:55:40,393 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_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-03 04:55:40,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:40,411 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:55:40,460 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_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[33021,33034] [2021-11-03 04:55:40,517 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_54d862dd-bd45-4676-a913-bc5caf10575a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i[44590,44603] [2021-11-03 04:55:40,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:55:40,565 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:55:40,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40 WrapperNode [2021-11-03 04:55:40,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:55:40,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:55:40,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:55:40,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:55:40,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:55:40,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:55:40,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:55:40,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:55:40,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:55:40,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:55:40,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:55:40,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:55:40,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (1/1) ... [2021-11-03 04:55:40,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:55:40,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:55:40,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:55:40,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:55:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 04:55:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 04:55:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 04:55:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 04:55:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:55:40,972 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 04:55:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 04:55:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:55:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 04:55:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:55:40,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:55:40,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:55:46,008 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:55:46,009 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-03 04:55:46,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:55:46 BoogieIcfgContainer [2021-11-03 04:55:46,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:55:46,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:55:46,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:55:46,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:55:46,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:55:39" (1/3) ... [2021-11-03 04:55:46,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b6963e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:55:46, skipping insertion in model container [2021-11-03 04:55:46,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:55:40" (2/3) ... [2021-11-03 04:55:46,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b6963e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:55:46, skipping insertion in model container [2021-11-03 04:55:46,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:55:46" (3/3) ... [2021-11-03 04:55:46,025 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-1.i [2021-11-03 04:55:46,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:55:46,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 538 error locations. [2021-11-03 04:55:46,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:55:46,093 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:55:46,093 INFO L340 AbstractCegarLoop]: Starting to check reachability of 538 error locations. [2021-11-03 04:55:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 541 states have (on average 2.243992606284658) internal successors, (1214), 1079 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:55:46,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:46,180 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:55:46,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:55:46,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 04:55:46,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:46,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647476632] [2021-11-03 04:55:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:46,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:46,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:46,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:46,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:55:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:46,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:55:46,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:55:46,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:55:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:46,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:46,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:46,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:46,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647476632] [2021-11-03 04:55:46,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647476632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:46,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:46,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:55:46,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604283302] [2021-11-03 04:55:46,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:55:46,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:55:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:55:46,538 INFO L87 Difference]: Start difference. First operand has 1080 states, 541 states have (on average 2.243992606284658) internal successors, (1214), 1079 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:48,474 INFO L93 Difference]: Finished difference Result 1075 states and 1136 transitions. [2021-11-03 04:55:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:55:48,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 04:55:48,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:48,496 INFO L225 Difference]: With dead ends: 1075 [2021-11-03 04:55:48,497 INFO L226 Difference]: Without dead ends: 1073 [2021-11-03 04:55:48,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:55:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2021-11-03 04:55:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 1065. [2021-11-03 04:55:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 541 states have (on average 2.0831792975970425) internal successors, (1127), 1064 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1127 transitions. [2021-11-03 04:55:48,596 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1127 transitions. Word has length 3 [2021-11-03 04:55:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:48,596 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1127 transitions. [2021-11-03 04:55:48,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1127 transitions. [2021-11-03 04:55:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:55:48,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:48,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:55:48,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:55:48,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:55:48,823 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:55:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 04:55:48,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:48,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480850184] [2021-11-03 04:55:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:48,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:48,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:48,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:48,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:55:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:48,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:55:48,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:55:48,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:55:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:49,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:49,062 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:49,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480850184] [2021-11-03 04:55:49,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480850184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:49,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:49,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:55:49,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019969995] [2021-11-03 04:55:49,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:55:49,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:49,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:55:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:55:49,069 INFO L87 Difference]: Start difference. First operand 1065 states and 1127 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:53,524 INFO L93 Difference]: Finished difference Result 1560 states and 1660 transitions. [2021-11-03 04:55:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:55:53,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-03 04:55:53,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:53,534 INFO L225 Difference]: With dead ends: 1560 [2021-11-03 04:55:53,535 INFO L226 Difference]: Without dead ends: 1560 [2021-11-03 04:55:53,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:55:53,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-11-03 04:55:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1100. [2021-11-03 04:55:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 585 states have (on average 2.0615384615384613) internal successors, (1206), 1099 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1206 transitions. [2021-11-03 04:55:53,568 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1206 transitions. Word has length 3 [2021-11-03 04:55:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:53,568 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1206 transitions. [2021-11-03 04:55:53,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1206 transitions. [2021-11-03 04:55:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:55:53,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:53,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:55:53,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:55:53,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:55:53,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:55:53,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash 62249618, now seen corresponding path program 1 times [2021-11-03 04:55:53,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:53,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546768488] [2021-11-03 04:55:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:53,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:53,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:53,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:55:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:53,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:55:53,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:55:53,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:55:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:53,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:54,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:54,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:54,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546768488] [2021-11-03 04:55:54,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546768488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:54,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:54,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:55:54,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119735679] [2021-11-03 04:55:54,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:55:54,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:54,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:55:54,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:55:54,009 INFO L87 Difference]: Start difference. First operand 1100 states and 1206 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:55:55,962 INFO L93 Difference]: Finished difference Result 1428 states and 1559 transitions. [2021-11-03 04:55:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:55:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:55:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:55:55,970 INFO L225 Difference]: With dead ends: 1428 [2021-11-03 04:55:55,971 INFO L226 Difference]: Without dead ends: 1428 [2021-11-03 04:55:55,971 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:55:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-11-03 04:55:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1051. [2021-11-03 04:55:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 585 states have (on average 1.9726495726495727) internal successors, (1154), 1050 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1154 transitions. [2021-11-03 04:55:56,003 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1154 transitions. Word has length 8 [2021-11-03 04:55:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:55:56,003 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1154 transitions. [2021-11-03 04:55:56,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:55:56,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1154 transitions. [2021-11-03 04:55:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:55:56,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:55:56,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:55:56,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:55:56,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:55:56,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:55:56,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:55:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash 62249619, now seen corresponding path program 1 times [2021-11-03 04:55:56,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:55:56,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618498581] [2021-11-03 04:55:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:55:56,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:55:56,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:55:56,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:55:56,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:55:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:55:56,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:55:56,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:55:56,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:55:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:56,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:55:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:55:56,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:55:56,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618498581] [2021-11-03 04:55:56,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618498581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:55:56,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:55:56,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:55:56,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915496884] [2021-11-03 04:55:56,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:55:56,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:55:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:55:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:55:56,498 INFO L87 Difference]: Start difference. First operand 1051 states and 1154 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:00,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:00,120 INFO L93 Difference]: Finished difference Result 1471 states and 1566 transitions. [2021-11-03 04:56:00,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:00,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:56:00,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:00,128 INFO L225 Difference]: With dead ends: 1471 [2021-11-03 04:56:00,128 INFO L226 Difference]: Without dead ends: 1471 [2021-11-03 04:56:00,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-11-03 04:56:00,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 1041. [2021-11-03 04:56:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 585 states have (on average 1.9504273504273504) internal successors, (1141), 1040 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1141 transitions. [2021-11-03 04:56:00,156 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1141 transitions. Word has length 8 [2021-11-03 04:56:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:00,157 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1141 transitions. [2021-11-03 04:56:00,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1141 transitions. [2021-11-03 04:56:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:56:00,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:00,158 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:00,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:00,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:00,371 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:00,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash -945574260, now seen corresponding path program 1 times [2021-11-03 04:56:00,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:00,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240776635] [2021-11-03 04:56:00,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:00,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:00,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:00,396 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:00,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:56:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:00,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:56:00,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:00,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:00,743 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:00,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240776635] [2021-11-03 04:56:00,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240776635] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:00,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:00,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:56:00,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489977615] [2021-11-03 04:56:00,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:00,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:00,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:00,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:00,750 INFO L87 Difference]: Start difference. First operand 1041 states and 1141 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:01,551 INFO L93 Difference]: Finished difference Result 1487 states and 1619 transitions. [2021-11-03 04:56:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:56:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-03 04:56:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:01,560 INFO L225 Difference]: With dead ends: 1487 [2021-11-03 04:56:01,560 INFO L226 Difference]: Without dead ends: 1487 [2021-11-03 04:56:01,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:56:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-03 04:56:01,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1277. [2021-11-03 04:56:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 821 states have (on average 1.9378806333739342) internal successors, (1591), 1276 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1591 transitions. [2021-11-03 04:56:01,596 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1591 transitions. Word has length 11 [2021-11-03 04:56:01,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:01,598 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 1591 transitions. [2021-11-03 04:56:01,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1591 transitions. [2021-11-03 04:56:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:56:01,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:01,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:01,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:01,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:01,811 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr537ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash 751971392, now seen corresponding path program 1 times [2021-11-03 04:56:01,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:01,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521493002] [2021-11-03 04:56:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:01,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:01,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:01,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:01,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:56:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:02,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:02,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:02,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:56:02,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:56:02,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:56:02,105 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 04:56:02,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 04:56:02,177 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 04:56:02,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 04:56:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:02,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:02,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:02,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521493002] [2021-11-03 04:56:02,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521493002] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:02,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:02,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:56:02,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701639355] [2021-11-03 04:56:02,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:56:02,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:56:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:56:02,285 INFO L87 Difference]: Start difference. First operand 1277 states and 1591 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:03,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:03,941 INFO L93 Difference]: Finished difference Result 1661 states and 2040 transitions. [2021-11-03 04:56:03,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:03,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 12 [2021-11-03 04:56:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:03,950 INFO L225 Difference]: With dead ends: 1661 [2021-11-03 04:56:03,950 INFO L226 Difference]: Without dead ends: 1661 [2021-11-03 04:56:03,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:56:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-11-03 04:56:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1276. [2021-11-03 04:56:03,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 820 states have (on average 1.9378048780487804) internal successors, (1589), 1275 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1589 transitions. [2021-11-03 04:56:03,979 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1589 transitions. Word has length 12 [2021-11-03 04:56:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:03,979 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1589 transitions. [2021-11-03 04:56:03,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1589 transitions. [2021-11-03 04:56:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:56:03,980 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:03,980 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:04,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:04,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:04,193 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash -520774338, now seen corresponding path program 1 times [2021-11-03 04:56:04,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:04,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251225458] [2021-11-03 04:56:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:04,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:04,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:04,195 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:04,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:56:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:04,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:56:04,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:04,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:04,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:04,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251225458] [2021-11-03 04:56:04,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251225458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:04,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:04,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:56:04,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908377560] [2021-11-03 04:56:04,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:04,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:04,460 INFO L87 Difference]: Start difference. First operand 1276 states and 1589 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:04,490 INFO L93 Difference]: Finished difference Result 1216 states and 1503 transitions. [2021-11-03 04:56:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:56:04,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:56:04,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:04,499 INFO L225 Difference]: With dead ends: 1216 [2021-11-03 04:56:04,499 INFO L226 Difference]: Without dead ends: 1216 [2021-11-03 04:56:04,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-03 04:56:04,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2021-11-03 04:56:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 784 states have (on average 1.9170918367346939) internal successors, (1503), 1215 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1503 transitions. [2021-11-03 04:56:04,528 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1503 transitions. Word has length 18 [2021-11-03 04:56:04,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:04,528 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 1503 transitions. [2021-11-03 04:56:04,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:04,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1503 transitions. [2021-11-03 04:56:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-03 04:56:04,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:04,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:04,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:04,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:04,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:04,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2047030904, now seen corresponding path program 1 times [2021-11-03 04:56:04,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:04,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076926523] [2021-11-03 04:56:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:04,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:04,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:04,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:04,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:56:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:04,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:04,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:04,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:05,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:05,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076926523] [2021-11-03 04:56:05,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076926523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:05,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:05,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:56:05,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626788636] [2021-11-03 04:56:05,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:56:05,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:56:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:56:05,026 INFO L87 Difference]: Start difference. First operand 1216 states and 1503 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:05,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:05,112 INFO L93 Difference]: Finished difference Result 1188 states and 1447 transitions. [2021-11-03 04:56:05,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:05,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-03 04:56:05,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:05,119 INFO L225 Difference]: With dead ends: 1188 [2021-11-03 04:56:05,119 INFO L226 Difference]: Without dead ends: 1188 [2021-11-03 04:56:05,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:56:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2021-11-03 04:56:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1186. [2021-11-03 04:56:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 768 states have (on average 1.8815104166666667) internal successors, (1445), 1185 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1445 transitions. [2021-11-03 04:56:05,142 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1445 transitions. Word has length 20 [2021-11-03 04:56:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:05,143 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1445 transitions. [2021-11-03 04:56:05,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1445 transitions. [2021-11-03 04:56:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:56:05,144 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:05,144 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:05,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:05,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:05,360 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:05,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589690, now seen corresponding path program 1 times [2021-11-03 04:56:05,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:05,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190106726] [2021-11-03 04:56:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:05,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:05,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:05,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:05,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:56:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:05,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:05,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:05,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:56:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:05,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:05,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:05,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190106726] [2021-11-03 04:56:05,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190106726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:05,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:05,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:56:05,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540172909] [2021-11-03 04:56:05,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:05,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:05,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:05,882 INFO L87 Difference]: Start difference. First operand 1186 states and 1445 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:08,016 INFO L93 Difference]: Finished difference Result 1678 states and 2063 transitions. [2021-11-03 04:56:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:56:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:56:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:08,022 INFO L225 Difference]: With dead ends: 1678 [2021-11-03 04:56:08,022 INFO L226 Difference]: Without dead ends: 1678 [2021-11-03 04:56:08,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:56:08,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2021-11-03 04:56:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1182. [2021-11-03 04:56:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 768 states have (on average 1.87109375) internal successors, (1437), 1181 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1437 transitions. [2021-11-03 04:56:08,049 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1437 transitions. Word has length 34 [2021-11-03 04:56:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:08,049 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 1437 transitions. [2021-11-03 04:56:08,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1437 transitions. [2021-11-03 04:56:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:56:08,051 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:08,051 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:08,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:56:08,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:08,262 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:08,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1406589689, now seen corresponding path program 1 times [2021-11-03 04:56:08,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:08,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058108236] [2021-11-03 04:56:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:08,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:08,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:08,264 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:08,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:56:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:08,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:56:08,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:08,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:56:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:08,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:09,295 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:09,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058108236] [2021-11-03 04:56:09,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058108236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:09,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:09,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:56:09,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133585289] [2021-11-03 04:56:09,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:56:09,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:56:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:56:09,298 INFO L87 Difference]: Start difference. First operand 1182 states and 1437 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:16,072 INFO L93 Difference]: Finished difference Result 1809 states and 2216 transitions. [2021-11-03 04:56:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:56:16,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:56:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:16,080 INFO L225 Difference]: With dead ends: 1809 [2021-11-03 04:56:16,080 INFO L226 Difference]: Without dead ends: 1809 [2021-11-03 04:56:16,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:56:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-11-03 04:56:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1178. [2021-11-03 04:56:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 768 states have (on average 1.8606770833333333) internal successors, (1429), 1177 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1429 transitions. [2021-11-03 04:56:16,105 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1429 transitions. Word has length 34 [2021-11-03 04:56:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:16,106 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1429 transitions. [2021-11-03 04:56:16,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1429 transitions. [2021-11-03 04:56:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:56:16,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:16,108 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] [2021-11-03 04:56:16,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-03 04:56:16,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:16,321 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:16,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash -489765179, now seen corresponding path program 1 times [2021-11-03 04:56:16,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:16,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075017869] [2021-11-03 04:56:16,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:16,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:16,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:16,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:16,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:56:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:16,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:56:16,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:16,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:16,899 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:16,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075017869] [2021-11-03 04:56:16,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075017869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:16,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:16,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:56:16,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6741606] [2021-11-03 04:56:16,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:56:16,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:56:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:56:16,902 INFO L87 Difference]: Start difference. First operand 1178 states and 1429 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:16,967 INFO L93 Difference]: Finished difference Result 1166 states and 1409 transitions. [2021-11-03 04:56:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:56:16,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 04:56:16,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:16,974 INFO L225 Difference]: With dead ends: 1166 [2021-11-03 04:56:16,975 INFO L226 Difference]: Without dead ends: 1166 [2021-11-03 04:56:16,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:56:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2021-11-03 04:56:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2021-11-03 04:56:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 756 states have (on average 1.8637566137566137) internal successors, (1409), 1165 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1409 transitions. [2021-11-03 04:56:16,999 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1409 transitions. Word has length 52 [2021-11-03 04:56:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:16,999 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 1409 transitions. [2021-11-03 04:56:16,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1409 transitions. [2021-11-03 04:56:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:56:17,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:17,003 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:17,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:17,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:17,220 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:17,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash -531678063, now seen corresponding path program 1 times [2021-11-03 04:56:17,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:17,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947932076] [2021-11-03 04:56:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:17,222 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:17,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:17,223 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:17,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:56:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:17,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:56:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:17,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:56:17,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:56:18,469 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 04:56:18,470 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 27 treesize of output 29 [2021-11-03 04:56:18,491 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 04:56:18,492 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 26 treesize of output 22 [2021-11-03 04:56:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:18,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:23,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:23,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:23,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947932076] [2021-11-03 04:56:23,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [947932076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:23,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:23,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:56:23,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530637932] [2021-11-03 04:56:23,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:56:23,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:56:23,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 04:56:23,791 INFO L87 Difference]: Start difference. First operand 1166 states and 1409 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:40,423 INFO L93 Difference]: Finished difference Result 2115 states and 2666 transitions. [2021-11-03 04:56:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:56:40,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:56:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:40,432 INFO L225 Difference]: With dead ends: 2115 [2021-11-03 04:56:40,432 INFO L226 Difference]: Without dead ends: 2115 [2021-11-03 04:56:40,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 04:56:40,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2021-11-03 04:56:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1128. [2021-11-03 04:56:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 756 states have (on average 1.8134920634920635) internal successors, (1371), 1127 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1371 transitions. [2021-11-03 04:56:40,456 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1371 transitions. Word has length 60 [2021-11-03 04:56:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:40,457 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1371 transitions. [2021-11-03 04:56:40,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1371 transitions. [2021-11-03 04:56:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:56:40,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:40,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:40,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-03 04:56:40,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:40,674 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr76ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:40,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:40,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1426362414, now seen corresponding path program 1 times [2021-11-03 04:56:40,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:40,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940261028] [2021-11-03 04:56:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:40,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:40,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:40,676 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:40,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:56:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:41,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:56:41,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:41,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:56:41,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-03 04:56:41,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-03 04:56:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:41,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:41,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:41,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940261028] [2021-11-03 04:56:41,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940261028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:41,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:41,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:56:41,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902817116] [2021-11-03 04:56:41,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:56:41,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:56:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:56:41,460 INFO L87 Difference]: Start difference. First operand 1128 states and 1371 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:56:46,629 INFO L93 Difference]: Finished difference Result 1817 states and 2195 transitions. [2021-11-03 04:56:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 04:56:46,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 04:56:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:56:46,636 INFO L225 Difference]: With dead ends: 1817 [2021-11-03 04:56:46,636 INFO L226 Difference]: Without dead ends: 1817 [2021-11-03 04:56:46,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:56:46,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2021-11-03 04:56:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1127. [2021-11-03 04:56:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 756 states have (on average 1.812169312169312) internal successors, (1370), 1126 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1370 transitions. [2021-11-03 04:56:46,656 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1370 transitions. Word has length 66 [2021-11-03 04:56:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:56:46,657 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1370 transitions. [2021-11-03 04:56:46,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:56:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1370 transitions. [2021-11-03 04:56:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:56:46,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:56:46,658 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:56:46,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:56:46,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:56:46,872 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr77ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:56:46,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:56:46,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1267561538, now seen corresponding path program 1 times [2021-11-03 04:56:46,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:56:46,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624727309] [2021-11-03 04:56:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:56:46,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:56:46,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:56:46,874 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:56:46,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:56:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:56:47,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:56:47,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:56:47,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:56:47,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-03 04:56:47,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:56:47,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-03 04:56:47,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-03 04:56:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:47,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:56:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:56:48,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:56:48,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624727309] [2021-11-03 04:56:48,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624727309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:56:48,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:56:48,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:56:48,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107641668] [2021-11-03 04:56:48,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:56:48,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:56:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:56:48,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:56:48,140 INFO L87 Difference]: Start difference. First operand 1127 states and 1370 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:02,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:02,941 INFO L93 Difference]: Finished difference Result 1745 states and 2145 transitions. [2021-11-03 04:57:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 04:57:02,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-03 04:57:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:02,948 INFO L225 Difference]: With dead ends: 1745 [2021-11-03 04:57:02,948 INFO L226 Difference]: Without dead ends: 1745 [2021-11-03 04:57:02,948 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:57:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-11-03 04:57:02,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1126. [2021-11-03 04:57:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 756 states have (on average 1.810846560846561) internal successors, (1369), 1125 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1369 transitions. [2021-11-03 04:57:02,965 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1369 transitions. Word has length 67 [2021-11-03 04:57:02,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:02,966 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1369 transitions. [2021-11-03 04:57:02,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1369 transitions. [2021-11-03 04:57:02,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:57:02,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:02,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:02,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 04:57:03,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:03,181 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:57:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash -582276570, now seen corresponding path program 1 times [2021-11-03 04:57:03,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:03,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244283020] [2021-11-03 04:57:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:03,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:03,183 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:03,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:57:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:03,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:57:03,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:03,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:04,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:04,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244283020] [2021-11-03 04:57:04,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244283020] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:57:04,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:57:04,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:57:04,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658546413] [2021-11-03 04:57:04,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:57:04,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:04,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:57:04,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:57:04,011 INFO L87 Difference]: Start difference. First operand 1126 states and 1369 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:04,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:04,198 INFO L93 Difference]: Finished difference Result 1903 states and 2339 transitions. [2021-11-03 04:57:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:57:04,199 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:57:04,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:04,209 INFO L225 Difference]: With dead ends: 1903 [2021-11-03 04:57:04,209 INFO L226 Difference]: Without dead ends: 1903 [2021-11-03 04:57:04,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:57:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2021-11-03 04:57:04,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1129. [2021-11-03 04:57:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 759 states have (on average 1.8076416337285903) internal successors, (1372), 1128 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1372 transitions. [2021-11-03 04:57:04,233 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1372 transitions. Word has length 71 [2021-11-03 04:57:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:04,233 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1372 transitions. [2021-11-03 04:57:04,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1372 transitions. [2021-11-03 04:57:04,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:57:04,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:04,234 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:04,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:04,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:04,438 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:57:04,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:04,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1283072730, now seen corresponding path program 1 times [2021-11-03 04:57:04,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:04,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320428041] [2021-11-03 04:57:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:04,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:04,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:04,440 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:04,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:57:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:04,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:04,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:05,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:05,377 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:05,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320428041] [2021-11-03 04:57:05,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320428041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:05,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1180294846] [2021-11-03 04:57:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:05,378 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:05,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:05,380 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:05,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 04:57:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:06,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:06,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:06,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:06,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1180294846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:06,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921270762] [2021-11-03 04:57:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:57:06,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:57:06,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:57:06,417 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:57:06,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-03 04:57:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:57:07,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:57:07,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:07,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:07,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921270762] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:07,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 04:57:07,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 04:57:07,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789255405] [2021-11-03 04:57:07,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:57:07,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:57:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:57:07,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:57:07,333 INFO L87 Difference]: Start difference. First operand 1129 states and 1372 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:57:07,751 INFO L93 Difference]: Finished difference Result 1909 states and 2345 transitions. [2021-11-03 04:57:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:57:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:57:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:57:07,761 INFO L225 Difference]: With dead ends: 1909 [2021-11-03 04:57:07,761 INFO L226 Difference]: Without dead ends: 1909 [2021-11-03 04:57:07,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:57:07,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2021-11-03 04:57:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1135. [2021-11-03 04:57:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 765 states have (on average 1.8013071895424837) internal successors, (1378), 1134 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1378 transitions. [2021-11-03 04:57:07,778 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1378 transitions. Word has length 73 [2021-11-03 04:57:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:57:07,778 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1378 transitions. [2021-11-03 04:57:07,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:57:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1378 transitions. [2021-11-03 04:57:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:57:07,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:57:07,779 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:57:07,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:07,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:08,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:57:08,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:57:08,382 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 534 more)] === [2021-11-03 04:57:08,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:57:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash -376896730, now seen corresponding path program 2 times [2021-11-03 04:57:08,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:57:08,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252910284] [2021-11-03 04:57:08,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:57:08,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:57:08,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:57:08,384 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:57:08,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:57:09,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:57:09,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:57:09,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:57:09,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:09,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:10,092 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:10,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:57:10,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252910284] [2021-11-03 04:57:10,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252910284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:10,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [645983403] [2021-11-03 04:57:10,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:57:10,093 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 04:57:10,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 04:57:10,098 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 04:57:10,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 04:57:11,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:57:11,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:57:11,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 04:57:11,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:11,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:57:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:57:11,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [645983403] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:57:11,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824397185] [2021-11-03 04:57:11,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 04:57:11,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:57:11,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:57:11,980 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:57:11,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54d862dd-bd45-4676-a913-bc5caf10575a/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 04:57:43,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 04:57:43,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:57:43,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-03 04:57:43,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:57:43,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:57:43,535 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 04:57:43,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-03 04:57:43,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-03 04:57:43,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-03 04:57:44,041 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 04:57:44,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-03 04:57:44,074 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:57:44,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-03 04:57:44,374 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:57:44,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:57:45,843 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:57:45,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:57:46,090 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:57:46,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:57:46,146 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:57:46,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:57:46,383 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:57:46,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:57:46,438 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:57:46,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:57:49,744 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 04:57:49,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 04:57:51,590 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:57:51,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 04:57:51,886 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 04:57:51,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-03 04:57:58,588 WARN L207 SmtUtils]: Spent 6.69 s on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2021-11-03 04:57:58,588 INFO L354 Elim1Store]: treesize reduction 100, result has 22.5 percent of original size [2021-11-03 04:57:58,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 105 [2021-11-03 04:57:58,969 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-03 04:57:58,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 48 [2021-11-03 04:57:58,983 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-03 04:57:58,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 21 [2021-11-03 04:57:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 04:57:59,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:58:13,073 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 35 [2021-11-03 04:58:25,306 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| (_ BitVec 32)) (v_subst_4 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1) (bvadd v_subst_4 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse1))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| (_ BitVec 32)) (v_subst_3 (_ BitVec 32))) (let ((.cse2 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse4 (bvadd v_subst_3 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse5 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3))) c_ULTIMATE.start_main_~user~0.base) .cse5)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse5)))))) is different from false [2021-11-03 04:58:30,494 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse2 (bvadd v_subst_7 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse3 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1))) c_ULTIMATE.start_main_~user~0.base) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse3))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) (store (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr236| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5) (bvadd v_subst_8 |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) .cse5))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse4) (bvadd .cse4 (_ bv20 32)))))) is different from false