./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G --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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:53:48,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:53:48,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:53:48,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:53:48,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:53:48,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:53:48,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:53:48,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:53:48,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:53:48,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:53:48,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:53:48,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:53:48,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:53:48,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:53:48,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:53:48,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:53:48,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:53:48,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:53:48,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:53:48,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:53:48,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:53:48,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:53:48,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:53:48,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:53:48,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:53:48,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:53:48,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:53:48,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:53:48,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:53:48,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:53:48,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:53:48,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:53:48,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:53:48,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:53:48,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:53:48,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:53:48,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:53:48,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:53:48,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:53:48,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:53:48,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:53:48,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 12:53:48,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:53:48,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:53:48,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:53:48,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:53:48,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:53:48,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:53:48,334 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:53:48,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:53:48,335 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:53:48,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:53:48,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:53:48,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:53:48,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:53:48,337 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:53:48,338 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:53:48,338 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:53:48,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:53:48,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:53:48,339 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:53:48,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:53:48,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:53:48,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:53:48,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:53:48,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:53:48,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:53:48,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:53:48,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:53:48,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:53:48,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:53:48,344 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-11-23 12:53:48,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:53:48,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:53:48,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:53:48,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:53:48,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:53:48,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-23 12:53:48,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/fb86f1e18/f29d22482bf04389b9447943279609a1/FLAGd5d2e7ab0 [2021-11-23 12:53:49,661 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:53:49,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-23 12:53:49,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/fb86f1e18/f29d22482bf04389b9447943279609a1/FLAGd5d2e7ab0 [2021-11-23 12:53:49,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/fb86f1e18/f29d22482bf04389b9447943279609a1 [2021-11-23 12:53:49,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:53:49,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:53:49,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:53:49,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:53:49,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:53:49,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:53:49" (1/1) ... [2021-11-23 12:53:49,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bf4dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:49, skipping insertion in model container [2021-11-23 12:53:49,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:53:49" (1/1) ... [2021-11-23 12:53:49,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:53:49,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:53:50,660 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-23 12:53:50,673 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-23 12:53:50,787 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-23 12:53:50,788 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-23 12:53:50,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:53:50,825 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) [2021-11-23 12:53:50,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67be169c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:50, skipping insertion in model container [2021-11-23 12:53:50,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:53:50,829 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 12:53:50,831 INFO L158 Benchmark]: Toolchain (without parser) took 1028.86ms. Allocated memory is still 96.5MB. Free memory was 60.1MB in the beginning and 58.9MB in the end (delta: 1.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:53:50,833 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 96.5MB. Free memory was 54.3MB in the beginning and 54.2MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:53:50,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1022.36ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 59.3MB in the end (delta: 542.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 12:53:50,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 96.5MB. Free memory was 54.3MB in the beginning and 54.2MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1022.36ms. Allocated memory is still 96.5MB. Free memory was 59.8MB in the beginning and 59.3MB in the end (delta: 542.7kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G --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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:53:53,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:53:53,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:53:53,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:53:53,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:53:53,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:53:53,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:53:53,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:53:53,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:53:53,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:53:53,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:53:53,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:53:53,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:53:53,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:53:53,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:53:53,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:53:53,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:53:53,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:53:53,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:53:53,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:53:53,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:53:53,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:53:53,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:53:53,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:53:53,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:53:53,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:53:53,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:53:53,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:53:53,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:53:53,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:53:53,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:53:53,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:53:53,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:53:53,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:53:53,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:53:53,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:53:53,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:53:53,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:53:53,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:53:53,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:53:53,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:53:53,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 12:53:53,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:53:53,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:53:53,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:53:53,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:53:53,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:53:53,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:53:53,799 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:53:53,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:53:53,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:53:53,800 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 12:53:53,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:53:53,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:53:53,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:53:53,801 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 12:53:53,802 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 12:53:53,802 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 12:53:53,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:53:53,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:53:53,803 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:53:53,803 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:53:53,803 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:53:53,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:53:53,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:53:53,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:53:53,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:53:53,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:53:53,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:53:53,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:53:53,806 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:53:53,806 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:53:53,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:53:53,807 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:53:53,807 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-11-23 12:53:54,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:53:54,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:53:54,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:53:54,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:53:54,273 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:53:54,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-23 12:53:54,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/0bde1a109/1735e5c74d97465ea663040aea4fed89/FLAG4a35975aa [2021-11-23 12:53:55,159 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:53:55,160 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-11-23 12:53:55,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/0bde1a109/1735e5c74d97465ea663040aea4fed89/FLAG4a35975aa [2021-11-23 12:53:55,271 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/data/0bde1a109/1735e5c74d97465ea663040aea4fed89 [2021-11-23 12:53:55,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:53:55,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:53:55,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:53:55,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:53:55,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:53:55,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:53:55" (1/1) ... [2021-11-23 12:53:55,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad34aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:55, skipping insertion in model container [2021-11-23 12:53:55,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:53:55" (1/1) ... [2021-11-23 12:53:55,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:53:55,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:53:56,297 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-23 12:53:56,314 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-23 12:53:56,553 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-23 12:53:56,561 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-23 12:53:56,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:53:56,585 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 12:53:56,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:53:56,647 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-23 12:53:56,650 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-23 12:53:56,735 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-23 12:53:56,737 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-23 12:53:56,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:53:56,747 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:53:56,782 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44118,44131] [2021-11-23 12:53:56,785 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[44660,44673] [2021-11-23 12:53:56,839 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56247,56260] [2021-11-23 12:53:56,840 WARN L230 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_06456e13-b1b9-4d36-a987-e9bf517aa05a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i[56368,56381] [2021-11-23 12:53:56,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:53:56,969 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:53:56,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56 WrapperNode [2021-11-23 12:53:56,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:53:56,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:53:56,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:53:56,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:53:56,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,209 INFO L137 Inliner]: procedures = 285, calls = 294, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 1173 [2021-11-23 12:53:57,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:53:57,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:53:57,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:53:57,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:53:57,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:53:57,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:53:57,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:53:57,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:53:57,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (1/1) ... [2021-11-23 12:53:57,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:53:57,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:53:57,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:53:57,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:53:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 12:53:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 12:53:57,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:53:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 12:53:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:53:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:53:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 12:53:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:53:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:53:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:53:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:53:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:53:57,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:53:57,893 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:53:57,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:54:04,356 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:54:04,387 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:54:04,387 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-23 12:54:04,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:04 BoogieIcfgContainer [2021-11-23 12:54:04,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:54:04,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:54:04,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:54:04,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:54:04,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:53:55" (1/3) ... [2021-11-23 12:54:04,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faeae56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:54:04, skipping insertion in model container [2021-11-23 12:54:04,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:53:56" (2/3) ... [2021-11-23 12:54:04,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faeae56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:54:04, skipping insertion in model container [2021-11-23 12:54:04,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:54:04" (3/3) ... [2021-11-23 12:54:04,413 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2021-11-23 12:54:04,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:54:04,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 562 error locations. [2021-11-23 12:54:04,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:54:04,509 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 [2021-11-23 12:54:04,510 INFO L340 AbstractCegarLoop]: Starting to check reachability of 562 error locations. [2021-11-23 12:54:04,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 1154 states, 591 states have (on average 2.1844331641285955) internal successors, (1291), 1153 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 12:54:04,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:04,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 12:54:04,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:04,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:04,589 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-23 12:54:04,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:04,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066256177] [2021-11-23 12:54:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:04,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:04,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:04,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:04,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:54:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:04,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:54:04,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:04,983 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 [2021-11-23 12:54:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:05,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:05,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066256177] [2021-11-23 12:54:05,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066256177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:05,044 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:05,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 12:54:05,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070301172] [2021-11-23 12:54:05,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:05,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:54:05,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:54:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:54:05,115 INFO L87 Difference]: Start difference. First operand has 1154 states, 591 states have (on average 2.1844331641285955) internal successors, (1291), 1153 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:07,969 INFO L93 Difference]: Finished difference Result 1137 states and 1195 transitions. [2021-11-23 12:54:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:54:07,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 12:54:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:08,014 INFO L225 Difference]: With dead ends: 1137 [2021-11-23 12:54:08,015 INFO L226 Difference]: Without dead ends: 1135 [2021-11-23 12:54:08,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:54:08,029 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1066 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:08,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 751 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-23 12:54:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-23 12:54:08,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1126. [2021-11-23 12:54:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 583 states have (on average 2.032590051457976) internal successors, (1185), 1125 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1185 transitions. [2021-11-23 12:54:08,183 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1185 transitions. Word has length 3 [2021-11-23 12:54:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:08,184 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1185 transitions. [2021-11-23 12:54:08,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1185 transitions. [2021-11-23 12:54:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 12:54:08,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:08,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 12:54:08,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:08,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:08,404 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-23 12:54:08,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:08,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734051464] [2021-11-23 12:54:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:08,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:08,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:08,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:54:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:08,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:54:08,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:08,577 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 [2021-11-23 12:54:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:08,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:08,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:08,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734051464] [2021-11-23 12:54:08,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734051464] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:08,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:08,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-23 12:54:08,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195849684] [2021-11-23 12:54:08,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:08,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:54:08,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:08,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:54:08,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:54:08,659 INFO L87 Difference]: Start difference. First operand 1126 states and 1185 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:14,442 INFO L93 Difference]: Finished difference Result 1631 states and 1722 transitions. [2021-11-23 12:54:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:54:14,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-23 12:54:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:14,456 INFO L225 Difference]: With dead ends: 1631 [2021-11-23 12:54:14,456 INFO L226 Difference]: Without dead ends: 1631 [2021-11-23 12:54:14,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:54:14,458 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 1673 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:14,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 1527 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-23 12:54:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-11-23 12:54:14,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1162. [2021-11-23 12:54:14,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 628 states have (on average 2.0143312101910826) internal successors, (1265), 1161 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1265 transitions. [2021-11-23 12:54:14,500 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1265 transitions. Word has length 3 [2021-11-23 12:54:14,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:14,501 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1265 transitions. [2021-11-23 12:54:14,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1265 transitions. [2021-11-23 12:54:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:54:14,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:14,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:14,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:14,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:14,716 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648752, now seen corresponding path program 1 times [2021-11-23 12:54:14,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:14,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107713156] [2021-11-23 12:54:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:14,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:14,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:14,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:14,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:54:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:14,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:54:14,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:14,923 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 [2021-11-23 12:54:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:14,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:15,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:15,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107713156] [2021-11-23 12:54:15,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107713156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:15,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:15,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 12:54:15,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327035644] [2021-11-23 12:54:15,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:15,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:54:15,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:54:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:54:15,019 INFO L87 Difference]: Start difference. First operand 1162 states and 1265 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:18,347 INFO L93 Difference]: Finished difference Result 1524 states and 1652 transitions. [2021-11-23 12:54:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:54:18,348 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:54:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:18,361 INFO L225 Difference]: With dead ends: 1524 [2021-11-23 12:54:18,362 INFO L226 Difference]: Without dead ends: 1524 [2021-11-23 12:54:18,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:54:18,368 INFO L933 BasicCegarLoop]: 1028 mSDtfsCounter, 2072 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:18,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2072 Valid, 1610 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 12:54:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-11-23 12:54:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1114. [2021-11-23 12:54:18,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 628 states have (on average 1.9331210191082802) internal successors, (1214), 1113 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1214 transitions. [2021-11-23 12:54:18,414 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1214 transitions. Word has length 9 [2021-11-23 12:54:18,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:18,415 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 1214 transitions. [2021-11-23 12:54:18,415 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1214 transitions. [2021-11-23 12:54:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:54:18,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:18,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:18,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:18,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:18,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648753, now seen corresponding path program 1 times [2021-11-23 12:54:18,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:18,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007157783] [2021-11-23 12:54:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:18,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:18,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:18,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:18,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:54:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:18,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:54:18,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:18,829 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 [2021-11-23 12:54:18,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:18,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:19,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:19,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007157783] [2021-11-23 12:54:19,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007157783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:19,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:19,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 12:54:19,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221081607] [2021-11-23 12:54:19,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:19,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:54:19,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:54:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:54:19,094 INFO L87 Difference]: Start difference. First operand 1114 states and 1214 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:28,781 INFO L93 Difference]: Finished difference Result 1591 states and 1683 transitions. [2021-11-23 12:54:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:54:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:54:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:28,791 INFO L225 Difference]: With dead ends: 1591 [2021-11-23 12:54:28,792 INFO L226 Difference]: Without dead ends: 1591 [2021-11-23 12:54:28,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:54:28,793 INFO L933 BasicCegarLoop]: 1253 mSDtfsCounter, 1479 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:28,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 3205 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 12:54:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2021-11-23 12:54:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1104. [2021-11-23 12:54:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 628 states have (on average 1.9124203821656052) internal successors, (1201), 1103 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1201 transitions. [2021-11-23 12:54:28,831 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1201 transitions. Word has length 9 [2021-11-23 12:54:28,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:28,832 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 1201 transitions. [2021-11-23 12:54:28,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1201 transitions. [2021-11-23 12:54:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:54:28,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:28,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:28,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:29,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:29,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr555ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1986319691, now seen corresponding path program 1 times [2021-11-23 12:54:29,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:29,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33080753] [2021-11-23 12:54:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:29,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:29,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:29,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 12:54:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:29,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:54:29,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:29,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:29,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:29,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33080753] [2021-11-23 12:54:29,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33080753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:29,379 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:29,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:54:29,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452728328] [2021-11-23 12:54:29,380 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:29,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:54:29,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:54:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:54:29,407 INFO L87 Difference]: Start difference. First operand 1104 states and 1201 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:30,400 INFO L93 Difference]: Finished difference Result 1589 states and 1718 transitions. [2021-11-23 12:54:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:54:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 12:54:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:30,411 INFO L225 Difference]: With dead ends: 1589 [2021-11-23 12:54:30,412 INFO L226 Difference]: Without dead ends: 1589 [2021-11-23 12:54:30,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:54:30,413 INFO L933 BasicCegarLoop]: 1176 mSDtfsCounter, 647 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:30,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 3165 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 12:54:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2021-11-23 12:54:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1343. [2021-11-23 12:54:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 867 states have (on average 1.9077277970011535) internal successors, (1654), 1342 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1654 transitions. [2021-11-23 12:54:30,458 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1654 transitions. Word has length 11 [2021-11-23 12:54:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:30,458 INFO L470 AbstractCegarLoop]: Abstraction has 1343 states and 1654 transitions. [2021-11-23 12:54:30,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1654 transitions. [2021-11-23 12:54:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:54:30,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:30,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:30,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:30,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:30,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr558ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:30,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1887735742, now seen corresponding path program 1 times [2021-11-23 12:54:30,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:30,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185959569] [2021-11-23 12:54:30,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:30,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:30,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:30,679 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:30,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 12:54:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:30,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:54:30,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:30,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:54:30,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:54:30,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 12:54:30,974 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-23 12:54:30,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-23 12:54:31,066 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 12:54:31,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-23 12:54:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:31,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:31,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:31,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185959569] [2021-11-23 12:54:31,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185959569] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:31,181 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:31,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:54:31,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107064221] [2021-11-23 12:54:31,182 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:31,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:54:31,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:54:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:54:31,183 INFO L87 Difference]: Start difference. First operand 1343 states and 1654 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:33,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:33,766 INFO L93 Difference]: Finished difference Result 1738 states and 2108 transitions. [2021-11-23 12:54:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:54:33,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 12:54:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:33,777 INFO L225 Difference]: With dead ends: 1738 [2021-11-23 12:54:33,777 INFO L226 Difference]: Without dead ends: 1738 [2021-11-23 12:54:33,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:54:33,779 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 394 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 4010 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:33,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 4010 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 12:54:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-11-23 12:54:33,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1342. [2021-11-23 12:54:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 866 states have (on average 1.907621247113164) internal successors, (1652), 1341 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1652 transitions. [2021-11-23 12:54:33,820 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1652 transitions. Word has length 13 [2021-11-23 12:54:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:33,820 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1652 transitions. [2021-11-23 12:54:33,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1652 transitions. [2021-11-23 12:54:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:54:33,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:33,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:54:33,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-23 12:54:34,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:34,038 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1153072931, now seen corresponding path program 1 times [2021-11-23 12:54:34,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:34,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035775582] [2021-11-23 12:54:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:34,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:34,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:34,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:34,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 12:54:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:34,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 12:54:34,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:34,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:34,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:34,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035775582] [2021-11-23 12:54:34,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035775582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:34,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:34,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 12:54:34,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595503371] [2021-11-23 12:54:34,326 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:34,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:54:34,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:54:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:54:34,328 INFO L87 Difference]: Start difference. First operand 1342 states and 1652 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:34,370 INFO L93 Difference]: Finished difference Result 1282 states and 1566 transitions. [2021-11-23 12:54:34,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:54:34,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 12:54:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:34,379 INFO L225 Difference]: With dead ends: 1282 [2021-11-23 12:54:34,379 INFO L226 Difference]: Without dead ends: 1282 [2021-11-23 12:54:34,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:54:34,381 INFO L933 BasicCegarLoop]: 1071 mSDtfsCounter, 1065 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:34,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 1101 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:54:34,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-11-23 12:54:34,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1282. [2021-11-23 12:54:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 830 states have (on average 1.8867469879518073) internal successors, (1566), 1281 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1566 transitions. [2021-11-23 12:54:34,417 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1566 transitions. Word has length 19 [2021-11-23 12:54:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:34,418 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1566 transitions. [2021-11-23 12:54:34,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1566 transitions. [2021-11-23 12:54:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 12:54:34,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:34,421 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] [2021-11-23 12:54:34,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:34,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:34,635 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:34,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130, now seen corresponding path program 1 times [2021-11-23 12:54:34,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:34,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313564829] [2021-11-23 12:54:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:34,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:34,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:34,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:34,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 12:54:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:34,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:54:34,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:34,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:34,956 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:34,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313564829] [2021-11-23 12:54:34,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313564829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:34,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:34,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 12:54:34,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039186556] [2021-11-23 12:54:34,958 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:34,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:54:34,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:54:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:54:34,960 INFO L87 Difference]: Start difference. First operand 1282 states and 1566 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:35,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:35,060 INFO L93 Difference]: Finished difference Result 1254 states and 1510 transitions. [2021-11-23 12:54:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:54:35,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 12:54:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:35,069 INFO L225 Difference]: With dead ends: 1254 [2021-11-23 12:54:35,069 INFO L226 Difference]: Without dead ends: 1254 [2021-11-23 12:54:35,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:54:35,071 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 1036 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:35,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 2075 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:54:35,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-23 12:54:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2021-11-23 12:54:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 814 states have (on average 1.8525798525798525) internal successors, (1508), 1251 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1508 transitions. [2021-11-23 12:54:35,106 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1508 transitions. Word has length 21 [2021-11-23 12:54:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:35,106 INFO L470 AbstractCegarLoop]: Abstraction has 1252 states and 1508 transitions. [2021-11-23 12:54:35,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1508 transitions. [2021-11-23 12:54:35,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 12:54:35,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:35,108 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] [2021-11-23 12:54:35,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:35,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:35,325 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:35,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:35,326 INFO L85 PathProgramCache]: Analyzing trace with hash 270814884, now seen corresponding path program 1 times [2021-11-23 12:54:35,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:35,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34421153] [2021-11-23 12:54:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:35,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:35,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:35,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 12:54:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:35,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:54:35,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:35,559 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 [2021-11-23 12:54:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:35,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:35,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:35,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34421153] [2021-11-23 12:54:35,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34421153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:35,884 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:35,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:54:35,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769727474] [2021-11-23 12:54:35,884 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:35,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:54:35,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:54:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:54:35,886 INFO L87 Difference]: Start difference. First operand 1252 states and 1508 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:39,220 INFO L93 Difference]: Finished difference Result 1745 states and 2121 transitions. [2021-11-23 12:54:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:54:39,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 12:54:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:39,238 INFO L225 Difference]: With dead ends: 1745 [2021-11-23 12:54:39,239 INFO L226 Difference]: Without dead ends: 1745 [2021-11-23 12:54:39,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:54:39,242 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 2785 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:39,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2785 Valid, 1436 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-23 12:54:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2021-11-23 12:54:39,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1248. [2021-11-23 12:54:39,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 814 states have (on average 1.8427518427518428) internal successors, (1500), 1247 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1500 transitions. [2021-11-23 12:54:39,282 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1500 transitions. Word has length 35 [2021-11-23 12:54:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:39,282 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1500 transitions. [2021-11-23 12:54:39,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1500 transitions. [2021-11-23 12:54:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 12:54:39,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:39,284 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] [2021-11-23 12:54:39,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:39,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:39,499 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 270814885, now seen corresponding path program 1 times [2021-11-23 12:54:39,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:39,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9352388] [2021-11-23 12:54:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:39,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:39,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:39,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 12:54:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:39,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 12:54:39,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:39,742 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 [2021-11-23 12:54:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:40,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:40,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:40,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9352388] [2021-11-23 12:54:40,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9352388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:40,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:40,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 12:54:40,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23865652] [2021-11-23 12:54:40,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:40,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:54:40,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:40,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:54:40,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:54:40,803 INFO L87 Difference]: Start difference. First operand 1248 states and 1500 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:51,300 INFO L93 Difference]: Finished difference Result 1900 states and 2299 transitions. [2021-11-23 12:54:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:54:51,302 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 12:54:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:51,312 INFO L225 Difference]: With dead ends: 1900 [2021-11-23 12:54:51,312 INFO L226 Difference]: Without dead ends: 1900 [2021-11-23 12:54:51,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:54:51,313 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 3221 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:51,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3221 Valid, 3297 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2021-11-23 12:54:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-11-23 12:54:51,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1244. [2021-11-23 12:54:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 814 states have (on average 1.8329238329238329) internal successors, (1492), 1243 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1492 transitions. [2021-11-23 12:54:51,352 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1492 transitions. Word has length 35 [2021-11-23 12:54:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:51,353 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 1492 transitions. [2021-11-23 12:54:51,353 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1492 transitions. [2021-11-23 12:54:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 12:54:51,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:51,356 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] [2021-11-23 12:54:51,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:51,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:51,569 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:51,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1615578914, now seen corresponding path program 1 times [2021-11-23 12:54:51,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:51,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039520051] [2021-11-23 12:54:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:51,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:51,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:51,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:51,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 12:54:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:51,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:54:51,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:51,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:52,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:52,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039520051] [2021-11-23 12:54:52,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039520051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:52,134 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:52,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 12:54:52,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288180428] [2021-11-23 12:54:52,135 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:52,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:54:52,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:54:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:54:52,136 INFO L87 Difference]: Start difference. First operand 1244 states and 1492 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:52,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:52,217 INFO L93 Difference]: Finished difference Result 1232 states and 1472 transitions. [2021-11-23 12:54:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:54:52,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-23 12:54:52,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:52,226 INFO L225 Difference]: With dead ends: 1232 [2021-11-23 12:54:52,226 INFO L226 Difference]: Without dead ends: 1232 [2021-11-23 12:54:52,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:54:52,227 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 1012 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:52,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 2038 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:54:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-11-23 12:54:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2021-11-23 12:54:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 802 states have (on average 1.8354114713216958) internal successors, (1472), 1231 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1472 transitions. [2021-11-23 12:54:52,261 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1472 transitions. Word has length 53 [2021-11-23 12:54:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:52,262 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1472 transitions. [2021-11-23 12:54:52,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:52,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1472 transitions. [2021-11-23 12:54:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:54:52,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:52,266 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] [2021-11-23 12:54:52,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:52,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:52,480 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136622, now seen corresponding path program 1 times [2021-11-23 12:54:52,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:52,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530439519] [2021-11-23 12:54:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:52,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:52,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:52,483 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:52,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 12:54:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:52,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:54:52,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:52,919 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 12:54:52,920 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 21 treesize of output 28 [2021-11-23 12:54:53,097 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-23 12:54:53,097 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 3 case distinctions, treesize of input 41 treesize of output 52 [2021-11-23 12:54:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:54,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:54:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:54:57,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:54:57,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530439519] [2021-11-23 12:54:57,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530439519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:54:57,046 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:54:57,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-11-23 12:54:57,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787837806] [2021-11-23 12:54:57,047 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:54:57,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:54:57,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:54:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:54:57,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-11-23 12:54:57,048 INFO L87 Difference]: Start difference. First operand 1232 states and 1472 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:54:57,081 INFO L93 Difference]: Finished difference Result 1236 states and 1477 transitions. [2021-11-23 12:54:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:54:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-23 12:54:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:54:57,091 INFO L225 Difference]: With dead ends: 1236 [2021-11-23 12:54:57,091 INFO L226 Difference]: Without dead ends: 1236 [2021-11-23 12:54:57,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-11-23 12:54:57,092 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 80 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:54:57,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1606 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 457 Unchecked, 0.0s Time] [2021-11-23 12:54:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-23 12:54:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2021-11-23 12:54:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 806 states have (on average 1.8325062034739454) internal successors, (1477), 1235 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1477 transitions. [2021-11-23 12:54:57,124 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1477 transitions. Word has length 61 [2021-11-23 12:54:57,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:54:57,125 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1477 transitions. [2021-11-23 12:54:57,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:54:57,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1477 transitions. [2021-11-23 12:54:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 12:54:57,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:54:57,127 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] [2021-11-23 12:54:57,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 12:54:57,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:54:57,345 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:54:57,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:54:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136623, now seen corresponding path program 1 times [2021-11-23 12:54:57,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:54:57,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790854465] [2021-11-23 12:54:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:54:57,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:54:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:54:57,349 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:54:57,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 12:54:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:54:57,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 12:54:57,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:54:57,822 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:54:57,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 12:54:57,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 12:54:57,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-23 12:54:57,991 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-23 12:54:57,992 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 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-23 12:55:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:04,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:55:11,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:11,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:55:11,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790854465] [2021-11-23 12:55:11,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790854465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:55:11,808 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:55:11,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-23 12:55:11,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54038724] [2021-11-23 12:55:11,808 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:55:11,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:55:11,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:55:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:55:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=73, Unknown=2, NotChecked=0, Total=110 [2021-11-23 12:55:11,810 INFO L87 Difference]: Start difference. First operand 1236 states and 1477 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:55:17,925 INFO L93 Difference]: Finished difference Result 1236 states and 1476 transitions. [2021-11-23 12:55:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:55:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-23 12:55:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:55:17,934 INFO L225 Difference]: With dead ends: 1236 [2021-11-23 12:55:17,934 INFO L226 Difference]: Without dead ends: 1236 [2021-11-23 12:55:17,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=35, Invalid=73, Unknown=2, NotChecked=0, Total=110 [2021-11-23 12:55:17,936 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 78 mSDsluCounter, 2533 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1161 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:55:17,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 3534 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 1161 Unchecked, 6.1s Time] [2021-11-23 12:55:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2021-11-23 12:55:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2021-11-23 12:55:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 806 states have (on average 1.8312655086848635) internal successors, (1476), 1235 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1476 transitions. [2021-11-23 12:55:17,967 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1476 transitions. Word has length 61 [2021-11-23 12:55:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:55:17,968 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1476 transitions. [2021-11-23 12:55:17,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:17,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1476 transitions. [2021-11-23 12:55:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 12:55:17,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:55:17,970 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] [2021-11-23 12:55:18,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 12:55:18,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:55:18,188 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:55:18,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:55:18,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1137699215, now seen corresponding path program 1 times [2021-11-23 12:55:18,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:55:18,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288060703] [2021-11-23 12:55:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:55:18,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:55:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:55:18,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:55:18,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 12:55:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:55:18,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:55:18,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:55:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:18,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:55:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:18,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:55:18,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288060703] [2021-11-23 12:55:18,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288060703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:55:18,816 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:55:18,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 12:55:18,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213978631] [2021-11-23 12:55:18,816 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:55:18,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:55:18,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:55:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:55:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:55:18,817 INFO L87 Difference]: Start difference. First operand 1236 states and 1476 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:55:19,158 INFO L93 Difference]: Finished difference Result 3532 states and 4254 transitions. [2021-11-23 12:55:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:55:19,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-23 12:55:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:55:19,175 INFO L225 Difference]: With dead ends: 3532 [2021-11-23 12:55:19,175 INFO L226 Difference]: Without dead ends: 3532 [2021-11-23 12:55:19,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:55:19,176 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 2037 mSDsluCounter, 5806 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 8753 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:55:19,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2037 Valid, 8753 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:55:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-11-23 12:55:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 1234. [2021-11-23 12:55:19,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 805 states have (on average 1.831055900621118) internal successors, (1474), 1233 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1474 transitions. [2021-11-23 12:55:19,222 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1474 transitions. Word has length 65 [2021-11-23 12:55:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:55:19,223 INFO L470 AbstractCegarLoop]: Abstraction has 1234 states and 1474 transitions. [2021-11-23 12:55:19,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1474 transitions. [2021-11-23 12:55:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 12:55:19,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:55:19,224 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] [2021-11-23 12:55:19,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-23 12:55:19,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:55:19,438 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:55:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:55:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash -908599332, now seen corresponding path program 1 times [2021-11-23 12:55:19,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:55:19,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594286424] [2021-11-23 12:55:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:55:19,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:55:19,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:55:19,440 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:55:19,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 12:55:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:55:19,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 12:55:19,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:55:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:19,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:55:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:20,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:55:20,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594286424] [2021-11-23 12:55:20,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594286424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:55:20,146 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:55:20,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 12:55:20,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054993712] [2021-11-23 12:55:20,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:55:20,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:55:20,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:55:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:55:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:55:20,148 INFO L87 Difference]: Start difference. First operand 1234 states and 1474 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:55:20,290 INFO L93 Difference]: Finished difference Result 3114 states and 3778 transitions. [2021-11-23 12:55:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:55:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-23 12:55:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:55:20,310 INFO L225 Difference]: With dead ends: 3114 [2021-11-23 12:55:20,311 INFO L226 Difference]: Without dead ends: 3114 [2021-11-23 12:55:20,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:55:20,315 INFO L933 BasicCegarLoop]: 2497 mSDtfsCounter, 1538 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:55:20,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 5977 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:55:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-11-23 12:55:20,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1490. [2021-11-23 12:55:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1061 states have (on average 1.8256361922714421) internal successors, (1937), 1489 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1937 transitions. [2021-11-23 12:55:20,385 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1937 transitions. Word has length 66 [2021-11-23 12:55:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:55:20,386 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 1937 transitions. [2021-11-23 12:55:20,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1937 transitions. [2021-11-23 12:55:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 12:55:20,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:55:20,388 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] [2021-11-23 12:55:20,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:55:20,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:55:20,605 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:55:20,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:55:20,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1606232379, now seen corresponding path program 1 times [2021-11-23 12:55:20,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:55:20,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028514819] [2021-11-23 12:55:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:55:20,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:55:20,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:55:20,607 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:55:20,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 12:55:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:55:21,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:55:21,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:55:21,131 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 [2021-11-23 12:55:21,139 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 [2021-11-23 12:55:21,872 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-23 12:55:21,872 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 [2021-11-23 12:55:21,884 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 12:55:21,884 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 19 treesize of output 19 [2021-11-23 12:55:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:21,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:55:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:24,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:55:24,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028514819] [2021-11-23 12:55:24,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028514819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:55:24,944 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:55:24,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-23 12:55:24,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746049520] [2021-11-23 12:55:24,945 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:55:24,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:55:24,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:55:24,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:55:24,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:55:24,946 INFO L87 Difference]: Start difference. First operand 1490 states and 1937 transitions. Second operand has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:55:29,378 INFO L93 Difference]: Finished difference Result 1942 states and 2489 transitions. [2021-11-23 12:55:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:55:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-23 12:55:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:55:29,388 INFO L225 Difference]: With dead ends: 1942 [2021-11-23 12:55:29,389 INFO L226 Difference]: Without dead ends: 1942 [2021-11-23 12:55:29,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:55:29,390 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 4480 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4480 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 655 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:55:29,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4480 Valid, 947 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1269 Invalid, 0 Unknown, 655 Unchecked, 4.3s Time] [2021-11-23 12:55:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2021-11-23 12:55:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1451. [2021-11-23 12:55:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1061 states have (on average 1.765315739868049) internal successors, (1873), 1450 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 1873 transitions. [2021-11-23 12:55:29,427 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 1873 transitions. Word has length 68 [2021-11-23 12:55:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:55:29,428 INFO L470 AbstractCegarLoop]: Abstraction has 1451 states and 1873 transitions. [2021-11-23 12:55:29,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 1873 transitions. [2021-11-23 12:55:29,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:55:29,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:55:29,430 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, 1, 1, 1, 1] [2021-11-23 12:55:29,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 12:55:29,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:55:29,649 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:55:29,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:55:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash -781624314, now seen corresponding path program 1 times [2021-11-23 12:55:29,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:55:29,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632589990] [2021-11-23 12:55:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:55:29,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:55:29,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:55:29,651 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:55:29,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 12:55:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:55:29,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:55:29,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:55:30,023 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 [2021-11-23 12:55:30,045 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 22 treesize of output 18 [2021-11-23 12:55:30,091 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 [2021-11-23 12:55:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:30,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:55:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:30,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:55:30,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632589990] [2021-11-23 12:55:30,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632589990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:55:30,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:55:30,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 12:55:30,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472131103] [2021-11-23 12:55:30,276 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:55:30,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:55:30,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:55:30,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:55:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:55:30,277 INFO L87 Difference]: Start difference. First operand 1451 states and 1873 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:55:36,565 INFO L93 Difference]: Finished difference Result 2172 states and 2733 transitions. [2021-11-23 12:55:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 12:55:36,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 12:55:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:55:36,572 INFO L225 Difference]: With dead ends: 2172 [2021-11-23 12:55:36,573 INFO L226 Difference]: Without dead ends: 2172 [2021-11-23 12:55:36,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:55:36,574 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1786 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:55:36,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1786 Valid, 3165 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 12:55:36,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-11-23 12:55:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1450. [2021-11-23 12:55:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1061 states have (on average 1.764373232799246) internal successors, (1872), 1449 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1872 transitions. [2021-11-23 12:55:36,612 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1872 transitions. Word has length 74 [2021-11-23 12:55:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:55:36,613 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 1872 transitions. [2021-11-23 12:55:36,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:55:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1872 transitions. [2021-11-23 12:55:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 12:55:36,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:55:36,615 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, 1, 1, 1, 1, 1] [2021-11-23 12:55:36,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 12:55:36,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:55:36,832 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:55:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:55:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1539450402, now seen corresponding path program 1 times [2021-11-23 12:55:36,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:55:36,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082563454] [2021-11-23 12:55:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:55:36,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:55:36,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:55:36,835 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:55:36,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 12:55:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:55:37,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 12:55:37,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:55:37,202 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 [2021-11-23 12:55:37,245 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 [2021-11-23 12:55:37,256 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 [2021-11-23 12:55:37,343 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 [2021-11-23 12:55:37,347 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 [2021-11-23 12:55:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:37,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:55:38,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:55:38,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:55:38,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082563454] [2021-11-23 12:55:38,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082563454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:55:38,089 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:55:38,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-23 12:55:38,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515343741] [2021-11-23 12:55:38,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:55:38,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:55:38,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:55:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:55:38,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:55:38,094 INFO L87 Difference]: Start difference. First operand 1450 states and 1872 transitions. Second operand has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:56:05,217 INFO L93 Difference]: Finished difference Result 3447 states and 4392 transitions. [2021-11-23 12:56:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:56:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-23 12:56:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:56:05,224 INFO L225 Difference]: With dead ends: 3447 [2021-11-23 12:56:05,224 INFO L226 Difference]: Without dead ends: 3447 [2021-11-23 12:56:05,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-11-23 12:56:05,225 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 3323 mSDsluCounter, 5300 mSDsCounter, 0 mSdLazyCounter, 4331 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 4352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 4331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:56:05,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3323 Valid, 5946 Invalid, 4352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 4331 Invalid, 0 Unknown, 0 Unchecked, 26.3s Time] [2021-11-23 12:56:05,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-11-23 12:56:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 1449. [2021-11-23 12:56:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1061 states have (on average 1.763430725730443) internal successors, (1871), 1448 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1871 transitions. [2021-11-23 12:56:05,280 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1871 transitions. Word has length 75 [2021-11-23 12:56:05,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:56:05,281 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1871 transitions. [2021-11-23 12:56:05,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1871 transitions. [2021-11-23 12:56:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 12:56:05,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:56:05,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:56:05,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 12:56:05,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:56:05,497 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:56:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:56:05,498 INFO L85 PathProgramCache]: Analyzing trace with hash -730014349, now seen corresponding path program 1 times [2021-11-23 12:56:05,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:56:05,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126534324] [2021-11-23 12:56:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:56:05,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:56:05,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:56:05,499 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:56:05,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 12:56:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:56:05,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:56:05,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:56:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:05,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:56:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:06,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:56:06,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126534324] [2021-11-23 12:56:06,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126534324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:56:06,030 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:56:06,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:56:06,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807446149] [2021-11-23 12:56:06,030 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:56:06,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:56:06,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:56:06,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:56:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:56:06,032 INFO L87 Difference]: Start difference. First operand 1449 states and 1871 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:56:06,208 INFO L93 Difference]: Finished difference Result 2728 states and 3529 transitions. [2021-11-23 12:56:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:56:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 12:56:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:56:06,214 INFO L225 Difference]: With dead ends: 2728 [2021-11-23 12:56:06,214 INFO L226 Difference]: Without dead ends: 2728 [2021-11-23 12:56:06,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:56:06,215 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 966 mSDsluCounter, 4596 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 5853 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:56:06,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 5853 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:56:06,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2021-11-23 12:56:06,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1452. [2021-11-23 12:56:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1064 states have (on average 1.7612781954887218) internal successors, (1874), 1451 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 1874 transitions. [2021-11-23 12:56:06,254 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 1874 transitions. Word has length 80 [2021-11-23 12:56:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:56:06,254 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 1874 transitions. [2021-11-23 12:56:06,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:06,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 1874 transitions. [2021-11-23 12:56:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 12:56:06,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:56:06,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:56:06,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 12:56:06,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:56:06,469 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:56:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:56:06,469 INFO L85 PathProgramCache]: Analyzing trace with hash 937545843, now seen corresponding path program 1 times [2021-11-23 12:56:06,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:56:06,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936735540] [2021-11-23 12:56:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:56:06,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:56:06,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:56:06,472 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:56:06,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 12:56:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:56:06,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:56:06,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:56:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:06,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:56:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:07,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:56:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936735540] [2021-11-23 12:56:07,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936735540] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:56:07,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:56:07,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-23 12:56:07,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911410480] [2021-11-23 12:56:07,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:56:07,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:56:07,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:56:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:56:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:56:07,120 INFO L87 Difference]: Start difference. First operand 1452 states and 1874 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:56:07,693 INFO L93 Difference]: Finished difference Result 2277 states and 2896 transitions. [2021-11-23 12:56:07,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:56:07,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-23 12:56:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:56:07,698 INFO L225 Difference]: With dead ends: 2277 [2021-11-23 12:56:07,698 INFO L226 Difference]: Without dead ends: 2277 [2021-11-23 12:56:07,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:56:07,699 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 808 mSDsluCounter, 5730 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 6772 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:56:07,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 6772 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:56:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2021-11-23 12:56:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1458. [2021-11-23 12:56:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1070 states have (on average 1.7570093457943925) internal successors, (1880), 1457 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1880 transitions. [2021-11-23 12:56:07,732 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1880 transitions. Word has length 82 [2021-11-23 12:56:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:56:07,733 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 1880 transitions. [2021-11-23 12:56:07,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:07,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1880 transitions. [2021-11-23 12:56:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:56:07,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:56:07,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:56:07,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 12:56:07,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:56:07,949 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:56:07,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:56:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -947292557, now seen corresponding path program 2 times [2021-11-23 12:56:07,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:56:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497495480] [2021-11-23 12:56:07,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:56:07,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:56:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:56:07,952 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:56:07,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 12:56:08,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:56:08,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:56:08,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:56:08,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:56:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:08,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:56:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:09,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:56:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497495480] [2021-11-23 12:56:09,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497495480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:56:09,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:56:09,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-23 12:56:09,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091329859] [2021-11-23 12:56:09,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:56:09,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:56:09,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:56:09,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:56:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:56:09,315 INFO L87 Difference]: Start difference. First operand 1458 states and 1880 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:56:13,410 INFO L93 Difference]: Finished difference Result 7954 states and 10352 transitions. [2021-11-23 12:56:13,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 12:56:13,412 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:56:13,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:56:13,457 INFO L225 Difference]: With dead ends: 7954 [2021-11-23 12:56:13,458 INFO L226 Difference]: Without dead ends: 7954 [2021-11-23 12:56:13,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=442, Invalid=964, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 12:56:13,460 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 11622 mSDsluCounter, 27975 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11622 SdHoareTripleChecker+Valid, 32621 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:56:13,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11622 Valid, 32621 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 12:56:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2021-11-23 12:56:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 1484. [2021-11-23 12:56:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1096 states have (on average 1.7527372262773722) internal successors, (1921), 1483 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 1921 transitions. [2021-11-23 12:56:13,536 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 1921 transitions. Word has length 86 [2021-11-23 12:56:13,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:56:13,537 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 1921 transitions. [2021-11-23 12:56:13,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 1921 transitions. [2021-11-23 12:56:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 12:56:13,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:56:13,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:56:13,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 12:56:13,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:56:13,761 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:56:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:56:13,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1483750797, now seen corresponding path program 3 times [2021-11-23 12:56:13,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:56:13,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839520518] [2021-11-23 12:56:13,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:56:13,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:56:13,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:56:13,763 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:56:13,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 12:56:14,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-23 12:56:14,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:56:14,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 12:56:14,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:56:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:15,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:56:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:17,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:56:17,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839520518] [2021-11-23 12:56:17,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839520518] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:56:17,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:56:17,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-23 12:56:17,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849233844] [2021-11-23 12:56:17,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:56:17,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-23 12:56:17,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:56:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-23 12:56:17,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 12:56:17,186 INFO L87 Difference]: Start difference. First operand 1484 states and 1921 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:56:32,140 INFO L93 Difference]: Finished difference Result 17220 states and 22544 transitions. [2021-11-23 12:56:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-23 12:56:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-23 12:56:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:56:32,203 INFO L225 Difference]: With dead ends: 17220 [2021-11-23 12:56:32,203 INFO L226 Difference]: Without dead ends: 17220 [2021-11-23 12:56:32,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1644, Invalid=4208, Unknown=0, NotChecked=0, Total=5852 [2021-11-23 12:56:32,209 INFO L933 BasicCegarLoop]: 10981 mSDtfsCounter, 31045 mSDsluCounter, 154606 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31045 SdHoareTripleChecker+Valid, 165587 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:56:32,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31045 Valid, 165587 Invalid, 1744 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [169 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-23 12:56:32,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17220 states. [2021-11-23 12:56:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17220 to 1524. [2021-11-23 12:56:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1136 states have (on average 1.744718309859155) internal successors, (1982), 1523 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1982 transitions. [2021-11-23 12:56:32,324 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1982 transitions. Word has length 94 [2021-11-23 12:56:32,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:56:32,325 INFO L470 AbstractCegarLoop]: Abstraction has 1524 states and 1982 transitions. [2021-11-23 12:56:32,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:56:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1982 transitions. [2021-11-23 12:56:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-23 12:56:32,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:56:32,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:56:32,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 12:56:32,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:56:32,549 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:56:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:56:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash -193439117, now seen corresponding path program 4 times [2021-11-23 12:56:32,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:56:32,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272522406] [2021-11-23 12:56:32,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:56:32,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:56:32,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:56:32,552 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:56:32,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 12:56:32,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:56:32,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:56:32,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 12:56:32,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:56:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:34,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:56:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:56:37,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:56:37,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272522406] [2021-11-23 12:56:37,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272522406] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:56:37,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:56:37,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-23 12:56:37,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921376192] [2021-11-23 12:56:37,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 12:56:37,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-23 12:56:37,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:56:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-23 12:56:37,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-23 12:56:37,926 INFO L87 Difference]: Start difference. First operand 1524 states and 1982 transitions. Second operand has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:58:15,757 INFO L93 Difference]: Finished difference Result 2373 states and 3018 transitions. [2021-11-23 12:58:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-23 12:58:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-23 12:58:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:58:15,761 INFO L225 Difference]: With dead ends: 2373 [2021-11-23 12:58:15,761 INFO L226 Difference]: Without dead ends: 2373 [2021-11-23 12:58:15,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=3577, Invalid=8413, Unknown=0, NotChecked=0, Total=11990 [2021-11-23 12:58:15,765 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 808 mSDsluCounter, 33648 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 34690 SdHoareTripleChecker+Invalid, 1930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:58:15,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 34690 Invalid, 1930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 67.5s Time] [2021-11-23 12:58:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2021-11-23 12:58:15,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 1554. [2021-11-23 12:58:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1166 states have (on average 1.7169811320754718) internal successors, (2002), 1553 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2002 transitions. [2021-11-23 12:58:15,795 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2002 transitions. Word has length 110 [2021-11-23 12:58:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:58:15,795 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 2002 transitions. [2021-11-23 12:58:15,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:58:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2002 transitions. [2021-11-23 12:58:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-23 12:58:15,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:58:15,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:58:15,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 12:58:16,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:58:16,018 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 558 more)] === [2021-11-23 12:58:16,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:58:16,018 INFO L85 PathProgramCache]: Analyzing trace with hash -684949645, now seen corresponding path program 5 times [2021-11-23 12:58:16,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:58:16,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215865805] [2021-11-23 12:58:16,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:58:16,020 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:58:16,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:58:16,021 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:58:16,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06456e13-b1b9-4d36-a987-e9bf517aa05a/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 12:58:17,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-23 12:58:17,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:58:17,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-23 12:58:17,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:58:17,468 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 [2021-11-23 12:58:17,739 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 12:58:17,739 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 21 treesize of output 28 [2021-11-23 12:58:17,852 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 26 treesize of output 22 [2021-11-23 12:58:18,260 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 12:58:18,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 36 [2021-11-23 12:58:22,588 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-11-23 12:58:22,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 53 [2021-11-23 12:58:26,301 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:26,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:26,458 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:26,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:26,617 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:26,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:26,784 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:26,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:58:28,723 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:28,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:32,160 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:32,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:33,536 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:33,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:34,672 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:34,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:34,823 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:34,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:34,970 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:34,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:35,128 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:35,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:36,699 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:36,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:36,859 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:36,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:38,577 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:38,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-23 12:58:40,292 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:40,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:42,037 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:42,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:42,200 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:42,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:42,341 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:42,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:58:42,528 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:42,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:45,673 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:45,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:58:48,506 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:48,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:58:48,633 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:48,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:58:48,803 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:48,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:48,931 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:48,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:52,406 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:52,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:53,416 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:53,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:53,558 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:53,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:55,037 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:55,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:55,156 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:55,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:58:55,315 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:55,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:55,457 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:55,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:58,406 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:58,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-23 12:58:58,520 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:58,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:58:58,654 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:58:58,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:59:00,745 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:00,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:59:00,881 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:00,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:59:01,005 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:01,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:59:01,146 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:01,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:59:02,930 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:02,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:59:06,276 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:06,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-23 12:59:06,394 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:06,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-23 12:59:06,528 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-23 12:59:06,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 49 [2021-11-23 12:59:06,751 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-23 12:59:06,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 54 [2021-11-23 12:59:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 43 proven. 44 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-23 12:59:06,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:59:13,181 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_171| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_171| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))))))))) is different from false [2021-11-23 12:59:21,445 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_173| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_171| (_ BitVec 32)) (|v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_175| (_ BitVec 32)) (|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_175| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_173| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr269#1_171| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))))))))) (_ bv1 1)))) is different from false