./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:18:10,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:18:10,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:18:11,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:18:11,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:18:11,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:18:11,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:18:11,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:18:11,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:18:11,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:18:11,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:18:11,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:18:11,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:18:11,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:18:11,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:18:11,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:18:11,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:18:11,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:18:11,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:18:11,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:18:11,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:18:11,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:18:11,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:18:11,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:18:11,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:18:11,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:18:11,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:18:11,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:18:11,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:18:11,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:18:11,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:18:11,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:18:11,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:18:11,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:18:11,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:18:11,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:18:11,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:18:11,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:18:11,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:18:11,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:18:11,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:18:11,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:18:11,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:18:11,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:18:11,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:18:11,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:18:11,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:18:11,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:18:11,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:18:11,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:18:11,216 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:18:11,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:18:11,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:18:11,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:18:11,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:18:11,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:18:11,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:18:11,219 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:18:11,220 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:18:11,220 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:18:11,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:18:11,221 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:18:11,221 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:18:11,222 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:18:11,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:18:11,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:18:11,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:18:11,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:18:11,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:18:11,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:18:11,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:18:11,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:18:11,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:18:11,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad [2021-11-13 18:18:11,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:18:11,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:18:11,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:18:11,671 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:18:11,672 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:18:11,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-13 18:18:11,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/cf80c1a11/ee1d63bdf0cd4b5ca7057cec04fd90fd/FLAGbb60910c5 [2021-11-13 18:18:12,628 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:18:12,629 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-13 18:18:12,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/cf80c1a11/ee1d63bdf0cd4b5ca7057cec04fd90fd/FLAGbb60910c5 [2021-11-13 18:18:12,723 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/cf80c1a11/ee1d63bdf0cd4b5ca7057cec04fd90fd [2021-11-13 18:18:12,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:18:12,728 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:18:12,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:18:12,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:18:12,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:18:12,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:18:12" (1/1) ... [2021-11-13 18:18:12,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c8ff64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:12, skipping insertion in model container [2021-11-13 18:18:12,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:18:12" (1/1) ... [2021-11-13 18:18:12,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:18:12,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:18:13,355 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-13 18:18:13,621 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-13 18:18:13,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:18:13,671 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) [2021-11-13 18:18:13,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26d2cbc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:13, skipping insertion in model container [2021-11-13 18:18:13,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:18:13,676 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 18:18:13,680 INFO L158 Benchmark]: Toolchain (without parser) took 949.71ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 48.3MB in the beginning and 69.4MB in the end (delta: -21.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:18:13,682 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:18:13,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 946.29ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 48.1MB in the beginning and 69.4MB in the end (delta: -21.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:18:13,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 86.0MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 946.29ms. Allocated memory was 86.0MB in the beginning and 107.0MB in the end (delta: 21.0MB). Free memory was 48.1MB in the beginning and 69.4MB in the end (delta: -21.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:18:16,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:18:16,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:18:16,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:18:16,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:18:16,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:18:16,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:18:16,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:18:16,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:18:16,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:18:16,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:18:16,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:18:16,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:18:16,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:18:16,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:18:16,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:18:16,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:18:16,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:18:16,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:18:16,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:18:16,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:18:16,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:18:16,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:18:16,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:18:16,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:18:16,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:18:16,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:18:16,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:18:16,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:18:16,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:18:16,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:18:16,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:18:16,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:18:16,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:18:16,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:18:16,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:18:16,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:18:16,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:18:16,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:18:16,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:18:16,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:18:16,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 18:18:16,790 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:18:16,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:18:16,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:18:16,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:18:16,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:18:16,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:18:16,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:18:16,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:18:16,794 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:18:16,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:18:16,794 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:18:16,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:18:16,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:18:16,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:18:16,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:18:16,796 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:18:16,796 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:18:16,796 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:18:16,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:18:16,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:18:16,797 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:18:16,797 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:18:16,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:18:16,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:18:16,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:18:16,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:18:16,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:18:16,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:18:16,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:18:16,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:18:16,799 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:18:16,799 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:18:16,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:18:16,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:18:16,800 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f3b69410d84404822a26401b92e2c10c65259dbe30a6f843124f3a9a51940ad [2021-11-13 18:18:17,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:18:17,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:18:17,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:18:17,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:18:17,321 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:18:17,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-13 18:18:17,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/56eee5353/27925385de8444c292c64588867d3475/FLAG4c13cdd1b [2021-11-13 18:18:18,418 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:18:18,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i [2021-11-13 18:18:18,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/56eee5353/27925385de8444c292c64588867d3475/FLAG4c13cdd1b [2021-11-13 18:18:18,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/data/56eee5353/27925385de8444c292c64588867d3475 [2021-11-13 18:18:18,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:18:18,499 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:18:18,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:18:18,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:18:18,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:18:18,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:18:18" (1/1) ... [2021-11-13 18:18:18,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383e6842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:18, skipping insertion in model container [2021-11-13 18:18:18,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:18:18" (1/1) ... [2021-11-13 18:18:18,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:18:18,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:18:19,244 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-13 18:18:19,468 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-13 18:18:19,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:18:19,555 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 18:18:19,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:18:19,628 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-13 18:18:19,815 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-13 18:18:19,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:18:19,851 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:18:19,906 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[33021,33034] [2021-11-13 18:18:20,025 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_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test5-2.i[49681,49694] [2021-11-13 18:18:20,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:18:20,123 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:18:20,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20 WrapperNode [2021-11-13 18:18:20,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:18:20,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:18:20,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:18:20,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:18:20,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:18:20,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:18:20,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:18:20,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:18:20,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (1/1) ... [2021-11-13 18:18:20,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:18:20,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:18:20,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:18:20,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:18:20,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:18:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:18:20,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:18:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 18:18:20,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 18:18:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 18:18:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 18:18:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 18:18:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 18:18:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:18:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 18:18:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:18:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:18:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 18:18:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 18:18:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 18:18:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 18:18:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 18:18:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 18:18:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 18:18:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 18:18:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 18:18:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 18:18:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 18:18:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:18:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 18:18:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 18:18:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 18:18:20,588 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 18:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 18:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 18:18:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 18:18:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 18:18:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 18:18:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 18:18:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 18:18:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 18:18:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 18:18:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 18:18:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 18:18:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 18:18:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 18:18:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 18:18:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 18:18:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 18:18:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 18:18:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 18:18:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 18:18:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 18:18:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 18:18:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 18:18:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 18:18:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 18:18:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 18:18:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 18:18:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 18:18:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 18:18:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 18:18:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 18:18:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 18:18:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 18:18:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 18:18:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 18:18:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 18:18:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 18:18:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 18:18:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 18:18:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 18:18:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 18:18:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 18:18:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 18:18:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 18:18:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 18:18:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 18:18:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 18:18:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 18:18:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 18:18:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 18:18:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 18:18:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 18:18:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 18:18:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 18:18:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 18:18:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 18:18:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 18:18:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 18:18:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 18:18:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 18:18:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 18:18:20,608 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 18:18:20,608 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 18:18:20,608 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 18:18:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 18:18:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 18:18:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 18:18:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 18:18:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 18:18:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 18:18:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 18:18:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 18:18:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 18:18:20,610 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 18:18:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 18:18:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 18:18:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 18:18:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 18:18:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 18:18:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 18:18:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 18:18:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 18:18:20,634 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 18:18:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 18:18:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 18:18:20,635 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 18:18:20,636 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 18:18:20,637 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 18:18:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 18:18:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 18:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 18:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 18:18:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 18:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 18:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 18:18:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 18:18:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 18:18:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 18:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 18:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 18:18:20,645 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 18:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 18:18:20,646 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 18:18:20,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 18:18:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 18:18:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 18:18:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 18:18:20,648 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 18:18:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 18:18:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 18:18:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 18:18:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 18:18:20,649 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 18:18:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 18:18:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 18:18:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 18:18:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 18:18:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 18:18:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 18:18:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 18:18:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 18:18:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 18:18:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 18:18:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 18:18:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 18:18:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 18:18:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 18:18:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 18:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 18:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 18:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 18:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 18:18:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 18:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 18:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 18:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 18:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 18:18:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 18:18:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 18:18:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 18:18:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 18:18:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 18:18:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 18:18:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 18:18:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 18:18:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 18:18:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 18:18:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:18:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:18:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 18:18:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:18:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:18:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:18:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:18:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:18:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:18:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:18:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:18:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:18:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:18:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 18:18:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:18:21,379 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 18:18:30,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:18:30,173 INFO L299 CfgBuilder]: Removed 92 assume(true) statements. [2021-11-13 18:18:30,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:18:30 BoogieIcfgContainer [2021-11-13 18:18:30,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:18:30,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:18:30,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:18:30,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:18:30,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:18:18" (1/3) ... [2021-11-13 18:18:30,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdf3ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:18:30, skipping insertion in model container [2021-11-13 18:18:30,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:18:20" (2/3) ... [2021-11-13 18:18:30,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cdf3ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:18:30, skipping insertion in model container [2021-11-13 18:18:30,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:18:30" (3/3) ... [2021-11-13 18:18:30,194 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test5-2.i [2021-11-13 18:18:30,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:18:30,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 834 error locations. [2021-11-13 18:18:30,307 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:18:30,321 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 [2021-11-13 18:18:30,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 834 error locations. [2021-11-13 18:18:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 1663 states, 815 states have (on average 2.245398773006135) internal successors, (1830), 1648 states have internal predecessors, (1830), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-13 18:18:30,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:18:30,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:30,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:30,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash -17023004, now seen corresponding path program 1 times [2021-11-13 18:18:30,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:30,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677927193] [2021-11-13 18:18:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:30,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:30,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:30,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:30,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:18:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:30,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:18:30,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:30,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:30,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:30,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677927193] [2021-11-13 18:18:30,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677927193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:30,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:30,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:18:30,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145095082] [2021-11-13 18:18:30,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:30,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:18:30,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:18:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:18:31,011 INFO L87 Difference]: Start difference. First operand has 1663 states, 815 states have (on average 2.245398773006135) internal successors, (1830), 1648 states have internal predecessors, (1830), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:31,174 INFO L93 Difference]: Finished difference Result 1645 states and 1739 transitions. [2021-11-13 18:18:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:18:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 18:18:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:31,213 INFO L225 Difference]: With dead ends: 1645 [2021-11-13 18:18:31,213 INFO L226 Difference]: Without dead ends: 1642 [2021-11-13 18:18:31,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:18:31,220 INFO L933 BasicCegarLoop]: 1739 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:31,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 14.28ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:18:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2021-11-13 18:18:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1642. [2021-11-13 18:18:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 806 states have (on average 2.120347394540943) internal successors, (1709), 1628 states have internal predecessors, (1709), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:18:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 1736 transitions. [2021-11-13 18:18:31,416 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 1736 transitions. Word has length 9 [2021-11-13 18:18:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:31,417 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 1736 transitions. [2021-11-13 18:18:31,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 1736 transitions. [2021-11-13 18:18:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:18:31,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:31,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:31,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 18:18:31,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:31,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash -17022942, now seen corresponding path program 1 times [2021-11-13 18:18:31,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:31,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938418593] [2021-11-13 18:18:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:31,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:31,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:31,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:31,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:18:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:31,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:18:31,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:32,008 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 [2021-11-13 18:18:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:32,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:32,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:32,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938418593] [2021-11-13 18:18:32,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938418593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:32,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:32,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:18:32,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788595975] [2021-11-13 18:18:32,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:32,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:18:32,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:18:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:18:32,096 INFO L87 Difference]: Start difference. First operand 1642 states and 1736 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:36,302 INFO L93 Difference]: Finished difference Result 1887 states and 2015 transitions. [2021-11-13 18:18:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:36,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 18:18:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:36,316 INFO L225 Difference]: With dead ends: 1887 [2021-11-13 18:18:36,316 INFO L226 Difference]: Without dead ends: 1887 [2021-11-13 18:18:36,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:18:36,319 INFO L933 BasicCegarLoop]: 1155 mSDtfsCounter, 1357 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3415.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.45ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4071.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:36,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 1527 Invalid, 1087 Unknown, 0 Unchecked, 28.45ms Time], IncrementalHoareTripleChecker [102 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 4071.04ms Time] [2021-11-13 18:18:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2021-11-13 18:18:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1627. [2021-11-13 18:18:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 882 states have (on average 1.9875283446712018) internal successors, (1753), 1613 states have internal predecessors, (1753), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:18:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 1780 transitions. [2021-11-13 18:18:36,385 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 1780 transitions. Word has length 9 [2021-11-13 18:18:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:36,385 INFO L470 AbstractCegarLoop]: Abstraction has 1627 states and 1780 transitions. [2021-11-13 18:18:36,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 1780 transitions. [2021-11-13 18:18:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:18:36,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:36,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:36,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:36,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:36,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -17022941, now seen corresponding path program 1 times [2021-11-13 18:18:36,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:36,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653319033] [2021-11-13 18:18:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:36,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:36,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:36,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:36,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:18:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:36,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:36,898 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 [2021-11-13 18:18:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:36,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:37,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:37,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653319033] [2021-11-13 18:18:37,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653319033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:37,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:37,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 18:18:37,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608347371] [2021-11-13 18:18:37,038 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:37,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:18:37,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:18:37,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:18:37,041 INFO L87 Difference]: Start difference. First operand 1627 states and 1780 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:46,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:46,472 INFO L93 Difference]: Finished difference Result 2187 states and 2382 transitions. [2021-11-13 18:18:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:18:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 18:18:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:46,489 INFO L225 Difference]: With dead ends: 2187 [2021-11-13 18:18:46,494 INFO L226 Difference]: Without dead ends: 2187 [2021-11-13 18:18:46,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:18:46,498 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 1542 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8266.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.69ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9313.20ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:46,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 2212 Invalid, 1192 Unknown, 0 Unchecked, 21.69ms Time], IncrementalHoareTripleChecker [28 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 9313.20ms Time] [2021-11-13 18:18:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-11-13 18:18:46,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1783. [2021-11-13 18:18:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1048 states have (on average 1.9646946564885497) internal successors, (2059), 1769 states have internal predecessors, (2059), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:18:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2086 transitions. [2021-11-13 18:18:46,576 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2086 transitions. Word has length 9 [2021-11-13 18:18:46,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:46,576 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 2086 transitions. [2021-11-13 18:18:46,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:46,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2086 transitions. [2021-11-13 18:18:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 18:18:46,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:46,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:46,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:46,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:46,806 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash -526023829, now seen corresponding path program 1 times [2021-11-13 18:18:46,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:46,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494342840] [2021-11-13 18:18:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:46,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:46,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:46,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:46,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:18:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:47,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:18:47,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:47,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:47,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:47,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494342840] [2021-11-13 18:18:47,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494342840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:47,162 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:47,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:18:47,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673509634] [2021-11-13 18:18:47,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:47,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:18:47,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:47,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:18:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:18:47,165 INFO L87 Difference]: Start difference. First operand 1783 states and 2086 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:47,442 INFO L93 Difference]: Finished difference Result 3334 states and 3920 transitions. [2021-11-13 18:18:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:18:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-13 18:18:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:47,467 INFO L225 Difference]: With dead ends: 3334 [2021-11-13 18:18:47,467 INFO L226 Difference]: Without dead ends: 3334 [2021-11-13 18:18:47,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:18:47,468 INFO L933 BasicCegarLoop]: 1860 mSDtfsCounter, 2730 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.60ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 200.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:47,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2744 Valid, 3734 Invalid, 34 Unknown, 0 Unchecked, 12.60ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 200.55ms Time] [2021-11-13 18:18:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-11-13 18:18:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2717. [2021-11-13 18:18:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2717 states, 1981 states have (on average 1.9575971731448762) internal successors, (3878), 2696 states have internal predecessors, (3878), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:18:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2717 states to 2717 states and 3919 transitions. [2021-11-13 18:18:47,577 INFO L78 Accepts]: Start accepts. Automaton has 2717 states and 3919 transitions. Word has length 10 [2021-11-13 18:18:47,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:47,578 INFO L470 AbstractCegarLoop]: Abstraction has 2717 states and 3919 transitions. [2021-11-13 18:18:47,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2717 states and 3919 transitions. [2021-11-13 18:18:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 18:18:47,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:47,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:47,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:47,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:47,798 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:47,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:47,801 INFO L85 PathProgramCache]: Analyzing trace with hash -247252948, now seen corresponding path program 1 times [2021-11-13 18:18:47,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:47,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910585967] [2021-11-13 18:18:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:47,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:47,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:47,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:47,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:18:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:18:48,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:48,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:48,138 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:48,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910585967] [2021-11-13 18:18:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910585967] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:48,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:48,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:18:48,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524592955] [2021-11-13 18:18:48,139 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:48,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:18:48,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:48,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:18:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:18:48,141 INFO L87 Difference]: Start difference. First operand 2717 states and 3919 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:48,198 INFO L93 Difference]: Finished difference Result 2657 states and 3833 transitions. [2021-11-13 18:18:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:18:48,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 18:18:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:48,220 INFO L225 Difference]: With dead ends: 2657 [2021-11-13 18:18:48,220 INFO L226 Difference]: Without dead ends: 2657 [2021-11-13 18:18:48,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:18:48,222 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 1538 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:48,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1691 Invalid, 12 Unknown, 0 Unchecked, 3.94ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.93ms Time] [2021-11-13 18:18:48,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2021-11-13 18:18:48,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2657. [2021-11-13 18:18:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2657 states, 1945 states have (on average 1.9496143958868895) internal successors, (3792), 2636 states have internal predecessors, (3792), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:18:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3833 transitions. [2021-11-13 18:18:48,314 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3833 transitions. Word has length 15 [2021-11-13 18:18:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:48,314 INFO L470 AbstractCegarLoop]: Abstraction has 2657 states and 3833 transitions. [2021-11-13 18:18:48,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3833 transitions. [2021-11-13 18:18:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 18:18:48,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:48,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:48,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:48,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:48,529 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr29REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1386883385, now seen corresponding path program 1 times [2021-11-13 18:18:48,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:48,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154252891] [2021-11-13 18:18:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:48,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:48,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:48,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:48,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:18:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:48,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:48,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:48,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:48,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:48,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154252891] [2021-11-13 18:18:48,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154252891] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:48,905 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:48,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 18:18:48,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211099212] [2021-11-13 18:18:48,905 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:48,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:18:48,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:18:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:18:48,907 INFO L87 Difference]: Start difference. First operand 2657 states and 3833 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:49,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:49,063 INFO L93 Difference]: Finished difference Result 2629 states and 3777 transitions. [2021-11-13 18:18:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:18:49,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 18:18:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:49,087 INFO L225 Difference]: With dead ends: 2629 [2021-11-13 18:18:49,087 INFO L226 Difference]: Without dead ends: 2629 [2021-11-13 18:18:49,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:49,089 INFO L933 BasicCegarLoop]: 1542 mSDtfsCounter, 3008 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.00ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:49,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3015 Valid, 3130 Invalid, 81 Unknown, 0 Unchecked, 12.00ms Time], IncrementalHoareTripleChecker [49 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 80.55ms Time] [2021-11-13 18:18:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2021-11-13 18:18:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 2627. [2021-11-13 18:18:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 1929 states have (on average 1.935717988595127) internal successors, (3734), 2606 states have internal predecessors, (3734), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:18:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3775 transitions. [2021-11-13 18:18:49,186 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3775 transitions. Word has length 17 [2021-11-13 18:18:49,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:49,187 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 3775 transitions. [2021-11-13 18:18:49,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:49,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3775 transitions. [2021-11-13 18:18:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:18:49,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:49,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:49,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:18:49,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:49,404 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:49,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1000557300, now seen corresponding path program 1 times [2021-11-13 18:18:49,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:49,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360308559] [2021-11-13 18:18:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:49,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:49,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:49,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:49,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:18:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:49,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:18:49,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:49,678 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 [2021-11-13 18:18:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:49,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:49,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:49,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360308559] [2021-11-13 18:18:49,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360308559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:49,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:49,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:18:49,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903368290] [2021-11-13 18:18:49,938 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:49,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:18:49,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:18:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:18:49,940 INFO L87 Difference]: Start difference. First operand 2627 states and 3775 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:54,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:18:54,935 INFO L93 Difference]: Finished difference Result 4072 states and 5650 transitions. [2021-11-13 18:18:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:18:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 18:18:54,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:18:54,963 INFO L225 Difference]: With dead ends: 4072 [2021-11-13 18:18:54,964 INFO L226 Difference]: Without dead ends: 4072 [2021-11-13 18:18:54,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:18:54,965 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 3170 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4071.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3174 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.96ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4891.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:18:54,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3174 Valid, 1895 Invalid, 1737 Unknown, 0 Unchecked, 14.96ms Time], IncrementalHoareTripleChecker [41 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 4891.17ms Time] [2021-11-13 18:18:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2021-11-13 18:18:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 2623. [2021-11-13 18:18:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 1929 states have (on average 1.931570762052877) internal successors, (3726), 2602 states have internal predecessors, (3726), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:18:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 3767 transitions. [2021-11-13 18:18:55,104 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 3767 transitions. Word has length 31 [2021-11-13 18:18:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:18:55,105 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 3767 transitions. [2021-11-13 18:18:55,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:18:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 3767 transitions. [2021-11-13 18:18:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 18:18:55,107 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:18:55,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:18:55,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-13 18:18:55,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:18:55,322 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:18:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:18:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1000557301, now seen corresponding path program 1 times [2021-11-13 18:18:55,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:18:55,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653022689] [2021-11-13 18:18:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:18:55,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:18:55,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:18:55,327 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:18:55,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:18:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:18:55,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:18:55,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:18:55,649 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 [2021-11-13 18:18:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:55,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:18:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:18:56,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:18:56,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653022689] [2021-11-13 18:18:56,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653022689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:18:56,496 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:18:56,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:18:56,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24057644] [2021-11-13 18:18:56,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:18:56,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:18:56,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:18:56,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:18:56,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:18:56,498 INFO L87 Difference]: Start difference. First operand 2623 states and 3767 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:10,742 INFO L93 Difference]: Finished difference Result 3387 states and 4564 transitions. [2021-11-13 18:19:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:19:10,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 18:19:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:10,764 INFO L225 Difference]: With dead ends: 3387 [2021-11-13 18:19:10,764 INFO L226 Difference]: Without dead ends: 3387 [2021-11-13 18:19:10,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:10,766 INFO L933 BasicCegarLoop]: 1120 mSDtfsCounter, 2483 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12457.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.63ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14026.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:10,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2483 Valid, 3274 Invalid, 2694 Unknown, 0 Unchecked, 20.63ms Time], IncrementalHoareTripleChecker [20 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 14026.55ms Time] [2021-11-13 18:19:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2021-11-13 18:19:10,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2619. [2021-11-13 18:19:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 1929 states have (on average 1.9274235355106273) internal successors, (3718), 2598 states have internal predecessors, (3718), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:19:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3759 transitions. [2021-11-13 18:19:10,872 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3759 transitions. Word has length 31 [2021-11-13 18:19:10,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:10,874 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 3759 transitions. [2021-11-13 18:19:10,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:10,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3759 transitions. [2021-11-13 18:19:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 18:19:10,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:10,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:10,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:11,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:11,098 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:11,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1312441104, now seen corresponding path program 1 times [2021-11-13 18:19:11,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:11,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783083910] [2021-11-13 18:19:11,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:11,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:11,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:11,101 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:11,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:19:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:11,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:19:11,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:11,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:11,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:11,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783083910] [2021-11-13 18:19:11,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783083910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:11,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:11,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:19:11,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499839802] [2021-11-13 18:19:11,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:11,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:19:11,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:19:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:19:11,682 INFO L87 Difference]: Start difference. First operand 2619 states and 3759 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:11,766 INFO L93 Difference]: Finished difference Result 2607 states and 3739 transitions. [2021-11-13 18:19:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:19:11,767 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-13 18:19:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:11,785 INFO L225 Difference]: With dead ends: 2607 [2021-11-13 18:19:11,785 INFO L226 Difference]: Without dead ends: 2607 [2021-11-13 18:19:11,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:19:11,786 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 1485 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.00ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.98ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:11,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 3108 Invalid, 41 Unknown, 0 Unchecked, 6.00ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 46.98ms Time] [2021-11-13 18:19:11,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2021-11-13 18:19:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2607. [2021-11-13 18:19:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2607 states, 1917 states have (on average 1.92905581637976) internal successors, (3698), 2586 states have internal predecessors, (3698), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:19:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2607 states to 2607 states and 3739 transitions. [2021-11-13 18:19:11,888 INFO L78 Accepts]: Start accepts. Automaton has 2607 states and 3739 transitions. Word has length 46 [2021-11-13 18:19:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:11,889 INFO L470 AbstractCegarLoop]: Abstraction has 2607 states and 3739 transitions. [2021-11-13 18:19:11,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2607 states and 3739 transitions. [2021-11-13 18:19:11,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 18:19:11,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:11,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:11,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:12,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:12,109 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:12,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1817426652, now seen corresponding path program 1 times [2021-11-13 18:19:12,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:12,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462085855] [2021-11-13 18:19:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:12,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:12,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:12,113 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:12,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:19:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:12,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:19:12,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:12,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:13,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:13,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462085855] [2021-11-13 18:19:13,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462085855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:13,339 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:13,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:19:13,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56967500] [2021-11-13 18:19:13,340 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:13,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:19:13,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:13,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:19:13,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:19:13,343 INFO L87 Difference]: Start difference. First operand 2607 states and 3739 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:13,691 INFO L93 Difference]: Finished difference Result 2618 states and 3588 transitions. [2021-11-13 18:19:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:19:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-11-13 18:19:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:13,707 INFO L225 Difference]: With dead ends: 2618 [2021-11-13 18:19:13,707 INFO L226 Difference]: Without dead ends: 2618 [2021-11-13 18:19:13,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:19:13,708 INFO L933 BasicCegarLoop]: 1615 mSDtfsCounter, 269 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 321.42ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:13,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 3026 Invalid, 97 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 321.42ms Time] [2021-11-13 18:19:13,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-11-13 18:19:13,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2423. [2021-11-13 18:19:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 1733 states have (on average 1.9290248124639353) internal successors, (3343), 2402 states have internal predecessors, (3343), 21 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 16 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-13 18:19:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3384 transitions. [2021-11-13 18:19:13,770 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3384 transitions. Word has length 54 [2021-11-13 18:19:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:13,771 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 3384 transitions. [2021-11-13 18:19:13,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:13,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3384 transitions. [2021-11-13 18:19:13,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:19:13,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:13,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:13,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:13,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:13,985 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash -707061665, now seen corresponding path program 1 times [2021-11-13 18:19:13,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:13,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975225895] [2021-11-13 18:19:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:13,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:13,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:13,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:13,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:19:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:14,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:19:14,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:14,585 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 [2021-11-13 18:19:14,595 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 [2021-11-13 18:19:15,372 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 18:19:15,373 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 25 treesize of output 27 [2021-11-13 18:19:15,387 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 18:19:15,388 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 24 treesize of output 20 [2021-11-13 18:19:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:15,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:20,393 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:20,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975225895] [2021-11-13 18:19:20,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975225895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:20,394 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:20,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:19:20,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735686892] [2021-11-13 18:19:20,395 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:20,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:19:20,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:19:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 18:19:20,397 INFO L87 Difference]: Start difference. First operand 2423 states and 3384 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:28,085 INFO L93 Difference]: Finished difference Result 3297 states and 4306 transitions. [2021-11-13 18:19:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:19:28,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-11-13 18:19:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:28,096 INFO L225 Difference]: With dead ends: 3297 [2021-11-13 18:19:28,097 INFO L226 Difference]: Without dead ends: 3297 [2021-11-13 18:19:28,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 18:19:28,098 INFO L933 BasicCegarLoop]: 1425 mSDtfsCounter, 1001 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6403.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 3237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.41ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1450 IncrementalHoareTripleChecker+Unchecked, 7536.33ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:28,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 3907 Invalid, 3237 Unknown, 0 Unchecked, 24.41ms Time], IncrementalHoareTripleChecker [53 Valid, 1734 Invalid, 0 Unknown, 1450 Unchecked, 7536.33ms Time] [2021-11-13 18:19:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2021-11-13 18:19:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 2622. [2021-11-13 18:19:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 1933 states have (on average 1.925504397309881) internal successors, (3722), 2597 states have internal predecessors, (3722), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-13 18:19:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3771 transitions. [2021-11-13 18:19:28,169 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3771 transitions. Word has length 57 [2021-11-13 18:19:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:28,169 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 3771 transitions. [2021-11-13 18:19:28,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3771 transitions. [2021-11-13 18:19:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 18:19:28,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:28,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:28,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:28,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:28,390 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:28,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -881417664, now seen corresponding path program 1 times [2021-11-13 18:19:28,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:28,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121274872] [2021-11-13 18:19:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:28,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:28,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:28,394 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:28,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:19:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:28,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:19:28,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:29,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:29,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 18:19:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:29,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:29,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121274872] [2021-11-13 18:19:29,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121274872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:29,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:29,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 18:19:29,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65762212] [2021-11-13 18:19:29,485 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:29,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:19:29,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:29,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:19:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:19:29,486 INFO L87 Difference]: Start difference. First operand 2622 states and 3771 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:33,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:33,560 INFO L93 Difference]: Finished difference Result 2589 states and 3705 transitions. [2021-11-13 18:19:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:19:33,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-11-13 18:19:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:33,569 INFO L225 Difference]: With dead ends: 2589 [2021-11-13 18:19:33,569 INFO L226 Difference]: Without dead ends: 2589 [2021-11-13 18:19:33,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:19:33,570 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 3605 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3419.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3612 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.82ms SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4016.68ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:33,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3612 Valid, 1528 Invalid, 845 Unknown, 0 Unchecked, 12.82ms Time], IncrementalHoareTripleChecker [73 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 4016.68ms Time] [2021-11-13 18:19:33,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-11-13 18:19:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2516. [2021-11-13 18:19:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 1860 states have (on average 1.886021505376344) internal successors, (3508), 2492 states have internal predecessors, (3508), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:19:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3555 transitions. [2021-11-13 18:19:33,623 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3555 transitions. Word has length 59 [2021-11-13 18:19:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:33,624 INFO L470 AbstractCegarLoop]: Abstraction has 2516 states and 3555 transitions. [2021-11-13 18:19:33,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3555 transitions. [2021-11-13 18:19:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:19:33,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:33,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:33,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:33,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:33,843 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:33,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:33,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1116726391, now seen corresponding path program 1 times [2021-11-13 18:19:33,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:33,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738515551] [2021-11-13 18:19:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:33,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:33,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:33,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 18:19:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:34,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:19:34,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:34,266 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 [2021-11-13 18:19:34,281 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 [2021-11-13 18:19:34,333 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 25 treesize of output 13 [2021-11-13 18:19:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:34,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:34,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:34,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738515551] [2021-11-13 18:19:34,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738515551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:34,514 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:34,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:19:34,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529811685] [2021-11-13 18:19:34,514 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:34,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:19:34,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:19:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:19:34,515 INFO L87 Difference]: Start difference. First operand 2516 states and 3555 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:39,730 INFO L93 Difference]: Finished difference Result 2515 states and 3553 transitions. [2021-11-13 18:19:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:39,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-13 18:19:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:39,752 INFO L225 Difference]: With dead ends: 2515 [2021-11-13 18:19:39,753 INFO L226 Difference]: Without dead ends: 2515 [2021-11-13 18:19:39,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:19:39,755 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 4 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4380.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3882 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.51ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5120.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:39,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3882 Invalid, 2148 Unknown, 0 Unchecked, 14.51ms Time], IncrementalHoareTripleChecker [1 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 5120.94ms Time] [2021-11-13 18:19:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2021-11-13 18:19:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2515. [2021-11-13 18:19:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 1860 states have (on average 1.8849462365591398) internal successors, (3506), 2491 states have internal predecessors, (3506), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:19:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3553 transitions. [2021-11-13 18:19:39,808 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3553 transitions. Word has length 62 [2021-11-13 18:19:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:39,808 INFO L470 AbstractCegarLoop]: Abstraction has 2515 states and 3553 transitions. [2021-11-13 18:19:39,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3553 transitions. [2021-11-13 18:19:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 18:19:39,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:39,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:39,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:40,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:40,026 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1116726392, now seen corresponding path program 1 times [2021-11-13 18:19:40,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:40,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004066361] [2021-11-13 18:19:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:40,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:40,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:40,029 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:40,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 18:19:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:40,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:19:40,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:40,509 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 [2021-11-13 18:19:40,550 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 [2021-11-13 18:19:40,560 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 [2021-11-13 18:19:40,621 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 [2021-11-13 18:19:40,626 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 [2021-11-13 18:19:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:40,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:40,981 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:40,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004066361] [2021-11-13 18:19:40,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004066361] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:40,981 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:40,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 18:19:40,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542178955] [2021-11-13 18:19:40,981 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:40,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:19:40,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:19:40,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:40,982 INFO L87 Difference]: Start difference. First operand 2515 states and 3553 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:58,374 INFO L93 Difference]: Finished difference Result 2514 states and 3551 transitions. [2021-11-13 18:19:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-13 18:19:58,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:58,380 INFO L225 Difference]: With dead ends: 2514 [2021-11-13 18:19:58,380 INFO L226 Difference]: Without dead ends: 2514 [2021-11-13 18:19:58,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:19:58,381 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 3 mSDsluCounter, 3863 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15460.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5369 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17235.06ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:58,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5369 Invalid, 3670 Unknown, 0 Unchecked, 25.84ms Time], IncrementalHoareTripleChecker [1 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 17235.06ms Time] [2021-11-13 18:19:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-11-13 18:19:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2514. [2021-11-13 18:19:58,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 1858 states have (on average 1.8858988159311088) internal successors, (3504), 2490 states have internal predecessors, (3504), 24 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (23), 19 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-13 18:19:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3551 transitions. [2021-11-13 18:19:58,424 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3551 transitions. Word has length 62 [2021-11-13 18:19:58,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:58,425 INFO L470 AbstractCegarLoop]: Abstraction has 2514 states and 3551 transitions. [2021-11-13 18:19:58,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:19:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3551 transitions. [2021-11-13 18:19:58,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 18:19:58,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:58,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:19:58,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:58,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:58,644 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1880694946, now seen corresponding path program 1 times [2021-11-13 18:19:58,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:58,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617672532] [2021-11-13 18:19:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:58,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:58,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:58,647 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:58,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 18:19:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:19:59,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:19:59,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:19:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:59,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:19:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:19:59,335 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:19:59,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617672532] [2021-11-13 18:19:59,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617672532] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:19:59,336 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:19:59,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:19:59,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693764077] [2021-11-13 18:19:59,336 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:19:59,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:19:59,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:19:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:19:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:19:59,338 INFO L87 Difference]: Start difference. First operand 2514 states and 3551 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:19:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:19:59,480 INFO L93 Difference]: Finished difference Result 2524 states and 3568 transitions. [2021-11-13 18:19:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:19:59,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2021-11-13 18:19:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:19:59,491 INFO L225 Difference]: With dead ends: 2524 [2021-11-13 18:19:59,491 INFO L226 Difference]: Without dead ends: 2524 [2021-11-13 18:19:59,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:19:59,493 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 11 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.54ms IncrementalHoareTripleChecker+Time [2021-11-13 18:19:59,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3008 Invalid, 47 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 104.54ms Time] [2021-11-13 18:19:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2021-11-13 18:19:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2524. [2021-11-13 18:19:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 1866 states have (on average 1.8842443729903537) internal successors, (3516), 2499 states have internal predecessors, (3516), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:19:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3568 transitions. [2021-11-13 18:19:59,547 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3568 transitions. Word has length 70 [2021-11-13 18:19:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:19:59,548 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3568 transitions. [2021-11-13 18:19:59,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:19:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3568 transitions. [2021-11-13 18:19:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 18:19:59,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:19:59,550 INFO L514 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] [2021-11-13 18:19:59,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:19:59,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:19:59,774 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:19:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:19:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash -208281762, now seen corresponding path program 1 times [2021-11-13 18:19:59,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:19:59,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886403944] [2021-11-13 18:19:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:19:59,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:19:59,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:19:59,777 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:19:59,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 18:20:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:20:00,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:20:00,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:20:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:00,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:20:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:00,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:20:00,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886403944] [2021-11-13 18:20:00,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886403944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:20:00,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:20:00,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:20:00,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041170591] [2021-11-13 18:20:00,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:20:00,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:20:00,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:20:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:20:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:20:00,526 INFO L87 Difference]: Start difference. First operand 2524 states and 3568 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:01,041 INFO L93 Difference]: Finished difference Result 2538 states and 3594 transitions. [2021-11-13 18:20:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:20:01,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-13 18:20:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:01,051 INFO L225 Difference]: With dead ends: 2538 [2021-11-13 18:20:01,051 INFO L226 Difference]: Without dead ends: 2534 [2021-11-13 18:20:01,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:20:01,052 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 28 mSDsluCounter, 7498 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 9004 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.56ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 297.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:01,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 9004 Invalid, 149 Unknown, 0 Unchecked, 9.56ms Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 297.01ms Time] [2021-11-13 18:20:01,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2021-11-13 18:20:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2530. [2021-11-13 18:20:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 1872 states have (on average 1.8824786324786325) internal successors, (3524), 2505 states have internal predecessors, (3524), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:20:01,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3576 transitions. [2021-11-13 18:20:01,137 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3576 transitions. Word has length 72 [2021-11-13 18:20:01,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:01,138 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 3576 transitions. [2021-11-13 18:20:01,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3576 transitions. [2021-11-13 18:20:01,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 18:20:01,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:01,146 INFO L514 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] [2021-11-13 18:20:01,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:20:01,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:20:01,353 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:20:01,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:01,354 INFO L85 PathProgramCache]: Analyzing trace with hash 464772958, now seen corresponding path program 2 times [2021-11-13 18:20:01,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:20:01,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254686279] [2021-11-13 18:20:01,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:20:01,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:20:01,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:20:01,356 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:20:01,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 18:20:01,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:20:01,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:20:01,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:20:01,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:20:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:02,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:20:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:02,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:20:02,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254686279] [2021-11-13 18:20:02,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254686279] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:20:02,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:20:02,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 18:20:02,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924764684] [2021-11-13 18:20:02,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:20:02,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 18:20:02,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:20:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 18:20:02,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:20:02,709 INFO L87 Difference]: Start difference. First operand 2530 states and 3576 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:04,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:04,648 INFO L93 Difference]: Finished difference Result 2558 states and 3638 transitions. [2021-11-13 18:20:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 18:20:04,648 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2021-11-13 18:20:04,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:04,659 INFO L225 Difference]: With dead ends: 2558 [2021-11-13 18:20:04,661 INFO L226 Difference]: Without dead ends: 2554 [2021-11-13 18:20:04,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 18:20:04,667 INFO L933 BasicCegarLoop]: 1510 mSDtfsCounter, 72 mSDsluCounter, 12035 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 784.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 13545 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.25ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 894.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:04,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 13545 Invalid, 459 Unknown, 0 Unchecked, 14.25ms Time], IncrementalHoareTripleChecker [69 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 894.71ms Time] [2021-11-13 18:20:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-11-13 18:20:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2542. [2021-11-13 18:20:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 1884 states have (on average 1.8789808917197452) internal successors, (3540), 2517 states have internal predecessors, (3540), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:20:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 3592 transitions. [2021-11-13 18:20:04,734 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 3592 transitions. Word has length 76 [2021-11-13 18:20:04,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:04,734 INFO L470 AbstractCegarLoop]: Abstraction has 2542 states and 3592 transitions. [2021-11-13 18:20:04,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 3592 transitions. [2021-11-13 18:20:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 18:20:04,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:04,736 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:04,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:20:04,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:20:04,955 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:20:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash 787472222, now seen corresponding path program 3 times [2021-11-13 18:20:04,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:20:04,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589306184] [2021-11-13 18:20:04,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:20:04,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:20:04,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:20:04,958 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:20:04,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 18:20:05,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 18:20:05,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:20:05,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 18:20:05,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:20:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:06,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:20:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:08,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:20:08,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589306184] [2021-11-13 18:20:08,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589306184] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:20:08,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:20:08,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 18:20:08,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030309451] [2021-11-13 18:20:08,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:20:08,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 18:20:08,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:20:08,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 18:20:08,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 18:20:08,372 INFO L87 Difference]: Start difference. First operand 2542 states and 3592 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:18,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:18,012 INFO L93 Difference]: Finished difference Result 2598 states and 3756 transitions. [2021-11-13 18:20:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 18:20:18,013 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-13 18:20:18,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:18,020 INFO L225 Difference]: With dead ends: 2598 [2021-11-13 18:20:18,021 INFO L226 Difference]: Without dead ends: 2592 [2021-11-13 18:20:18,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 18:20:18,024 INFO L933 BasicCegarLoop]: 1516 mSDtfsCounter, 223 mSDsluCounter, 22664 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2877.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 24180 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.89ms SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3251.06ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:18,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 24180 Invalid, 1764 Unknown, 0 Unchecked, 29.89ms Time], IncrementalHoareTripleChecker [177 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 3251.06ms Time] [2021-11-13 18:20:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2021-11-13 18:20:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2566. [2021-11-13 18:20:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 1908 states have (on average 1.871593291404612) internal successors, (3571), 2541 states have internal predecessors, (3571), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:20:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 3623 transitions. [2021-11-13 18:20:18,076 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 3623 transitions. Word has length 84 [2021-11-13 18:20:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:18,077 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 3623 transitions. [2021-11-13 18:20:18,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:18,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 3623 transitions. [2021-11-13 18:20:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 18:20:18,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:18,079 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:18,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:20:18,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:20:18,311 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:20:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1634197342, now seen corresponding path program 4 times [2021-11-13 18:20:18,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:20:18,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757192339] [2021-11-13 18:20:18,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 18:20:18,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:20:18,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:20:18,314 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:20:18,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 18:20:18,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 18:20:18,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:20:18,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 18:20:18,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:20:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:20,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:20:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:20:24,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:20:24,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757192339] [2021-11-13 18:20:24,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757192339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:20:24,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:20:24,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 18:20:24,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561045130] [2021-11-13 18:20:24,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:20:24,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 18:20:24,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:20:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 18:20:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 18:20:24,203 INFO L87 Difference]: Start difference. First operand 2566 states and 3623 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:20:42,787 INFO L93 Difference]: Finished difference Result 2658 states and 3859 transitions. [2021-11-13 18:20:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 18:20:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 100 [2021-11-13 18:20:42,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:20:42,795 INFO L225 Difference]: With dead ends: 2658 [2021-11-13 18:20:42,795 INFO L226 Difference]: Without dead ends: 2654 [2021-11-13 18:20:42,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 18:20:42,804 INFO L933 BasicCegarLoop]: 1533 mSDtfsCounter, 254 mSDsluCounter, 50364 mSDsCounter, 0 mSdLazyCounter, 5202 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9564.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 51897 SdHoareTripleChecker+Invalid, 5756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.05ms SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 5202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10847.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:20:42,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 51897 Invalid, 5756 Unknown, 0 Unchecked, 87.05ms Time], IncrementalHoareTripleChecker [554 Valid, 5202 Invalid, 0 Unknown, 0 Unchecked, 10847.55ms Time] [2021-11-13 18:20:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2021-11-13 18:20:42,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2596. [2021-11-13 18:20:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 1938 states have (on average 1.8663570691434468) internal successors, (3617), 2571 states have internal predecessors, (3617), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (28), 19 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-13 18:20:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3669 transitions. [2021-11-13 18:20:42,865 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3669 transitions. Word has length 100 [2021-11-13 18:20:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:20:42,865 INFO L470 AbstractCegarLoop]: Abstraction has 2596 states and 3669 transitions. [2021-11-13 18:20:42,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:20:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3669 transitions. [2021-11-13 18:20:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 18:20:42,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:20:42,868 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:20:42,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:20:43,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:20:43,087 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 830 more)] === [2021-11-13 18:20:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:20:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash -894378146, now seen corresponding path program 5 times [2021-11-13 18:20:43,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:20:43,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880325275] [2021-11-13 18:20:43,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 18:20:43,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:20:43,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:20:43,090 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:20:43,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d4d2a93-f89f-40a7-8c0a-336ba014baf7/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 18:20:44,614 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 18:20:44,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:20:44,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 18:20:44,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:20:44,671 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 [2021-11-13 18:20:44,916 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 18:20:44,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-13 18:20:44,990 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 27 treesize of output 23 [2021-11-13 18:20:45,245 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 48 treesize of output 36