./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF --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 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:38:42,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:38:42,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:38:42,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:38:42,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:38:42,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:38:42,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:38:42,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:38:42,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:38:42,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:38:42,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:38:42,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:38:42,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:38:42,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:38:42,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:38:42,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:38:42,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:38:42,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:38:42,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:38:42,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:38:42,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:38:42,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:38:42,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:38:42,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:38:42,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:38:42,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:38:42,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:38:42,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:38:42,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:38:42,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:38:42,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:38:42,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:38:42,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:38:42,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:38:42,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:38:42,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:38:42,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:38:42,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:38:42,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:38:42,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:38:42,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:38:42,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:38:42,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:38:42,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:38:42,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:38:42,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:38:42,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:38:42,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:38:42,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:38:42,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:38:42,457 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:38:42,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:38:42,459 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:38:42,459 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:38:42,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:38:42,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:38:42,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:38:42,461 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:38:42,461 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:38:42,461 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:38:42,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:38:42,462 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:38:42,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:38:42,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:38:42,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:38:42,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:38:42,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:38:42,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:38:42,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:38:42,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:38:42,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:38:42,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:38:42,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:38:42,467 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_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-20 05:38:42,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:38:42,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:38:42,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:38:42,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:38:42,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:38:42,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-20 05:38:42,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/24dc98c5e/57dfde648af649d9bb9e06ed53a8d23c/FLAG48e8c5911 [2021-11-20 05:38:43,795 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:38:43,795 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-20 05:38:43,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/24dc98c5e/57dfde648af649d9bb9e06ed53a8d23c/FLAG48e8c5911 [2021-11-20 05:38:43,962 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/24dc98c5e/57dfde648af649d9bb9e06ed53a8d23c [2021-11-20 05:38:43,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:38:43,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:38:43,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:38:43,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:38:43,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:38:43,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:38:43" (1/1) ... [2021-11-20 05:38:43,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f249367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:43, skipping insertion in model container [2021-11-20 05:38:43,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:38:43" (1/1) ... [2021-11-20 05:38:43,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:38:44,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:38:44,596 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_85033521-37ac-40dc-b600-c62ec808f56b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-20 05:38:44,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:38:44,750 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) [2021-11-20 05:38:44,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55bc5691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:44, skipping insertion in model container [2021-11-20 05:38:44,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:38:44,752 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:38:44,755 INFO L158 Benchmark]: Toolchain (without parser) took 785.76ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 45.4MB in the beginning and 86.0MB in the end (delta: -40.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:38:44,756 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:38:44,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 782.28ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 45.2MB in the beginning and 86.0MB in the end (delta: -40.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:38:44,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 782.28ms. Allocated memory was 83.9MB in the beginning and 121.6MB in the end (delta: 37.7MB). Free memory was 45.2MB in the beginning and 86.0MB in the end (delta: -40.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF --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 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:38:47,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:38:47,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:38:47,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:38:47,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:38:47,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:38:47,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:38:47,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:38:47,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:38:47,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:38:47,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:38:47,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:38:47,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:38:47,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:38:47,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:38:47,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:38:47,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:38:47,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:38:47,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:38:47,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:38:47,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:38:47,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:38:47,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:38:47,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:38:47,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:38:47,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:38:47,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:38:47,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:38:47,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:38:47,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:38:47,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:38:47,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:38:47,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:38:47,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:38:47,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:38:47,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:38:47,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:38:47,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:38:47,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:38:47,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:38:47,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:38:47,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:38:47,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:38:47,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:38:47,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:38:47,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:38:47,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:38:47,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:38:47,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:38:47,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:38:47,666 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:38:47,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:38:47,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:38:47,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:38:47,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:38:47,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:38:47,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:38:47,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:38:47,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:38:47,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:38:47,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:38:47,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:38:47,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:38:47,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:38:47,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:38:47,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:38:47,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:38:47,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:38:47,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:38:47,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:38:47,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:38:47,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:38:47,673 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:38:47,673 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:38:47,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:38:47,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:38:47,674 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_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2021-11-20 05:38:48,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:38:48,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:38:48,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:38:48,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:38:48,229 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:38:48,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-20 05:38:48,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/341e30b14/e788ef9109df4df78a86c3c8b171e451/FLAGdbaba2de4 [2021-11-20 05:38:49,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:38:49,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2021-11-20 05:38:49,233 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/341e30b14/e788ef9109df4df78a86c3c8b171e451/FLAGdbaba2de4 [2021-11-20 05:38:49,329 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/data/341e30b14/e788ef9109df4df78a86c3c8b171e451 [2021-11-20 05:38:49,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:38:49,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:38:49,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:38:49,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:38:49,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:38:49,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:38:49" (1/1) ... [2021-11-20 05:38:49,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8e68b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:49, skipping insertion in model container [2021-11-20 05:38:49,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:38:49" (1/1) ... [2021-11-20 05:38:49,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:38:49,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:38:50,000 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_85033521-37ac-40dc-b600-c62ec808f56b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-20 05:38:50,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:38:50,183 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:38:50,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:38:50,234 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_85033521-37ac-40dc-b600-c62ec808f56b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-20 05:38:50,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:38:50,354 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:38:50,397 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_85033521-37ac-40dc-b600-c62ec808f56b/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2021-11-20 05:38:50,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:38:50,627 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:38:50,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50 WrapperNode [2021-11-20 05:38:50,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:38:50,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:38:50,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:38:50,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:38:50,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:50,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:50,835 INFO L137 Inliner]: procedures = 180, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1166 [2021-11-20 05:38:50,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:38:50,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:38:50,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:38:50,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:38:50,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:50,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:50,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:50,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:50,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:51,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:51,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:51,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:38:51,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:38:51,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:38:51,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:38:51,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (1/1) ... [2021-11-20 05:38:51,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:38:51,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:38:51,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:38:51,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:38:51,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 05:38:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 05:38:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:38:51,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:38:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 05:38:51,177 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 05:38:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:38:51,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:38:51,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:38:51,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:38:51,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:38:51,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:38:51,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 05:38:51,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:38:51,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:38:51,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:38:51,499 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:38:51,514 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:38:51,524 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 05:38:58,484 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:38:58,526 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:38:58,526 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-11-20 05:38:58,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:38:58 BoogieIcfgContainer [2021-11-20 05:38:58,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:38:58,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:38:58,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:38:58,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:38:58,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:38:49" (1/3) ... [2021-11-20 05:38:58,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502dd899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:38:58, skipping insertion in model container [2021-11-20 05:38:58,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:38:50" (2/3) ... [2021-11-20 05:38:58,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502dd899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:38:58, skipping insertion in model container [2021-11-20 05:38:58,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:38:58" (3/3) ... [2021-11-20 05:38:58,550 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-1.i [2021-11-20 05:38:58,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:38:58,557 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2021-11-20 05:38:58,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:38:58,649 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 [2021-11-20 05:38:58,649 INFO L340 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2021-11-20 05:38:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:38:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 05:38:58,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:58,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 05:38:58,715 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:38:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-11-20 05:38:58,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:58,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720107257] [2021-11-20 05:38:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:58,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:58,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:58,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:58,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:38:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:58,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 05:38:59,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:59,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:59,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:59,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720107257] [2021-11-20 05:38:59,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720107257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:59,077 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:59,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:38:59,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547723005] [2021-11-20 05:38:59,080 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:59,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 05:38:59,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 05:38:59,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:38:59,122 INFO L87 Difference]: Start difference. First operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:38:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:38:59,227 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2021-11-20 05:38:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 05:38:59,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 05:38:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:38:59,264 INFO L225 Difference]: With dead ends: 1256 [2021-11-20 05:38:59,264 INFO L226 Difference]: Without dead ends: 1254 [2021-11-20 05:38:59,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 05:38:59,271 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:38:59,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:38:59,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-11-20 05:38:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2021-11-20 05:38:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 604 states have (on average 2.1456953642384105) internal successors, (1296), 1245 states have internal predecessors, (1296), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:38:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2021-11-20 05:38:59,410 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2021-11-20 05:38:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:38:59,410 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2021-11-20 05:38:59,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:38:59,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2021-11-20 05:38:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 05:38:59,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:38:59,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 05:38:59,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 05:38:59,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:38:59,625 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:38:59,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:38:59,626 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-11-20 05:38:59,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:38:59,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677995147] [2021-11-20 05:38:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:38:59,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:38:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:38:59,630 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:38:59,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:38:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:38:59,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:38:59,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:38:59,861 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 [2021-11-20 05:38:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:59,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:38:59,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:38:59,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:38:59,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677995147] [2021-11-20 05:38:59,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677995147] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:38:59,923 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:38:59,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 05:38:59,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98313293] [2021-11-20 05:38:59,926 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:38:59,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:38:59,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:38:59,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:38:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:38:59,932 INFO L87 Difference]: Start difference. First operand 1254 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:03,071 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2021-11-20 05:39:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:39:03,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 05:39:03,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:03,094 INFO L225 Difference]: With dead ends: 1291 [2021-11-20 05:39:03,095 INFO L226 Difference]: Without dead ends: 1291 [2021-11-20 05:39:03,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:03,097 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:03,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 05:39:03,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-20 05:39:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2021-11-20 05:39:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 680 states have (on average 1.9676470588235293) internal successors, (1338), 1228 states have internal predecessors, (1338), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:39:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2021-11-20 05:39:03,151 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2021-11-20 05:39:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:03,152 INFO L470 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2021-11-20 05:39:03,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:03,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2021-11-20 05:39:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 05:39:03,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:03,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 05:39:03,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:03,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:03,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-11-20 05:39:03,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:03,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473242630] [2021-11-20 05:39:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:03,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:03,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:03,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:03,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:39:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:03,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:39:03,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:03,581 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 [2021-11-20 05:39:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:03,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:03,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:03,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473242630] [2021-11-20 05:39:03,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473242630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:03,768 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:03,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 05:39:03,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646960338] [2021-11-20 05:39:03,769 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:03,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:39:03,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:39:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:03,771 INFO L87 Difference]: Start difference. First operand 1237 states and 1370 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:11,933 INFO L93 Difference]: Finished difference Result 1591 states and 1745 transitions. [2021-11-20 05:39:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:39:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 05:39:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:11,946 INFO L225 Difference]: With dead ends: 1591 [2021-11-20 05:39:11,946 INFO L226 Difference]: Without dead ends: 1591 [2021-11-20 05:39:11,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:11,948 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 615 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:11,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 1824 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-20 05:39:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2021-11-20 05:39:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1393. [2021-11-20 05:39:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 846 states have (on average 1.9432624113475176) internal successors, (1644), 1384 states have internal predecessors, (1644), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-20 05:39:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2021-11-20 05:39:12,002 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2021-11-20 05:39:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:12,002 INFO L470 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2021-11-20 05:39:12,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2021-11-20 05:39:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 05:39:12,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:12,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 05:39:12,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:12,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:12,212 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:12,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2021-11-20 05:39:12,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:12,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729620853] [2021-11-20 05:39:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:12,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:12,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:12,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:12,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:39:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:12,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:39:12,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:12,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:12,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:12,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729620853] [2021-11-20 05:39:12,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729620853] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:12,388 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:12,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:39:12,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850540118] [2021-11-20 05:39:12,389 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:12,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:39:12,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:39:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:12,390 INFO L87 Difference]: Start difference. First operand 1393 states and 1676 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:12,564 INFO L93 Difference]: Finished difference Result 2738 states and 3284 transitions. [2021-11-20 05:39:12,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:39:12,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 05:39:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:12,585 INFO L225 Difference]: With dead ends: 2738 [2021-11-20 05:39:12,585 INFO L226 Difference]: Without dead ends: 2738 [2021-11-20 05:39:12,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:12,587 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 2286 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2298 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:12,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2298 Valid, 2961 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2021-11-20 05:39:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 2209. [2021-11-20 05:39:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1662 states have (on average 1.9494584837545126) internal successors, (3240), 2194 states have internal predecessors, (3240), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:39:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3284 transitions. [2021-11-20 05:39:12,701 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3284 transitions. Word has length 6 [2021-11-20 05:39:12,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:12,701 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3284 transitions. [2021-11-20 05:39:12,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:12,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3284 transitions. [2021-11-20 05:39:12,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:39:12,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:12,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:12,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:12,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:12,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:12,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:12,929 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-11-20 05:39:12,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:12,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882911963] [2021-11-20 05:39:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:12,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:12,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:12,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:12,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:39:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:13,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:39:13,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:13,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:13,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:13,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882911963] [2021-11-20 05:39:13,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882911963] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:13,159 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:13,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:39:13,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710040560] [2021-11-20 05:39:13,160 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:13,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:39:13,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:39:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:13,161 INFO L87 Difference]: Start difference. First operand 2209 states and 3284 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:13,218 INFO L93 Difference]: Finished difference Result 2149 states and 3198 transitions. [2021-11-20 05:39:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:39:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 05:39:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:13,236 INFO L225 Difference]: With dead ends: 2149 [2021-11-20 05:39:13,236 INFO L226 Difference]: Without dead ends: 2149 [2021-11-20 05:39:13,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:13,237 INFO L933 BasicCegarLoop]: 1177 mSDtfsCounter, 1137 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1243 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 [2021-11-20 05:39:13,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1243 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:39:13,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2021-11-20 05:39:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2021-11-20 05:39:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1626 states have (on average 1.9397293972939729) internal successors, (3154), 2134 states have internal predecessors, (3154), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:39:13,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3198 transitions. [2021-11-20 05:39:13,314 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3198 transitions. Word has length 11 [2021-11-20 05:39:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:13,314 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3198 transitions. [2021-11-20 05:39:13,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:13,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3198 transitions. [2021-11-20 05:39:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:39:13,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:13,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:39:13,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 05:39:13,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:13,530 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:13,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:13,530 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-11-20 05:39:13,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:13,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074328590] [2021-11-20 05:39:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:13,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:13,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:13,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:39:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:13,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:39:13,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:13,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:13,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074328590] [2021-11-20 05:39:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074328590] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:13,820 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:13,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 05:39:13,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785247450] [2021-11-20 05:39:13,821 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:39:13,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:39:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:13,822 INFO L87 Difference]: Start difference. First operand 2149 states and 3198 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:13,964 INFO L93 Difference]: Finished difference Result 2121 states and 3142 transitions. [2021-11-20 05:39:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:39:13,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-20 05:39:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:13,982 INFO L225 Difference]: With dead ends: 2121 [2021-11-20 05:39:13,982 INFO L226 Difference]: Without dead ends: 2121 [2021-11-20 05:39:13,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:13,984 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 1108 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2323 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 [2021-11-20 05:39:13,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 2323 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:13,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-11-20 05:39:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 2119. [2021-11-20 05:39:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 1610 states have (on average 1.9229813664596274) internal successors, (3096), 2104 states have internal predecessors, (3096), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:39:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 3140 transitions. [2021-11-20 05:39:14,063 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 3140 transitions. Word has length 13 [2021-11-20 05:39:14,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:14,063 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 3140 transitions. [2021-11-20 05:39:14,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:14,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 3140 transitions. [2021-11-20 05:39:14,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:39:14,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:14,067 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] [2021-11-20 05:39:14,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:14,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:14,281 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:14,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-11-20 05:39:14,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:14,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686429211] [2021-11-20 05:39:14,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:14,283 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:14,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:14,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:14,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:39:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:14,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:39:14,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:14,491 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 [2021-11-20 05:39:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:14,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:14,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:14,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686429211] [2021-11-20 05:39:14,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686429211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:14,768 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:14,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:39:14,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541053336] [2021-11-20 05:39:14,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:14,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:39:14,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:39:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:14,770 INFO L87 Difference]: Start difference. First operand 2119 states and 3140 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:18,769 INFO L93 Difference]: Finished difference Result 2768 states and 3973 transitions. [2021-11-20 05:39:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:39:18,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-20 05:39:18,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:18,790 INFO L225 Difference]: With dead ends: 2768 [2021-11-20 05:39:18,790 INFO L226 Difference]: Without dead ends: 2768 [2021-11-20 05:39:18,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:18,792 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:18,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 05:39:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2768 states. [2021-11-20 05:39:18,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2768 to 2115. [2021-11-20 05:39:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 1610 states have (on average 1.9180124223602484) internal successors, (3088), 2100 states have internal predecessors, (3088), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:39:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 3132 transitions. [2021-11-20 05:39:18,881 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 3132 transitions. Word has length 27 [2021-11-20 05:39:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:18,881 INFO L470 AbstractCegarLoop]: Abstraction has 2115 states and 3132 transitions. [2021-11-20 05:39:18,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 3132 transitions. [2021-11-20 05:39:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:39:18,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:18,883 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] [2021-11-20 05:39:18,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:19,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:19,098 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2021-11-20 05:39:19,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:19,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003244618] [2021-11-20 05:39:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:19,099 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:19,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:19,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:19,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:39:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:19,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:39:19,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:19,272 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 [2021-11-20 05:39:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:19,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:20,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:20,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003244618] [2021-11-20 05:39:20,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003244618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:20,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:20,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:39:20,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994106346] [2021-11-20 05:39:20,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:20,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:39:20,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:20,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:39:20,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:20,087 INFO L87 Difference]: Start difference. First operand 2115 states and 3132 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:30,129 INFO L93 Difference]: Finished difference Result 2389 states and 3321 transitions. [2021-11-20 05:39:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:39:30,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-20 05:39:30,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:30,144 INFO L225 Difference]: With dead ends: 2389 [2021-11-20 05:39:30,144 INFO L226 Difference]: Without dead ends: 2389 [2021-11-20 05:39:30,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:39:30,145 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 1487 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:30,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 2315 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2021-11-20 05:39:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-11-20 05:39:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2021-11-20 05:39:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1610 states have (on average 1.9130434782608696) internal successors, (3080), 2096 states have internal predecessors, (3080), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:39:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3124 transitions. [2021-11-20 05:39:30,211 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3124 transitions. Word has length 27 [2021-11-20 05:39:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:30,211 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 3124 transitions. [2021-11-20 05:39:30,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3124 transitions. [2021-11-20 05:39:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-20 05:39:30,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:30,214 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] [2021-11-20 05:39:30,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:30,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:30,432 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2021-11-20 05:39:30,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:30,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572814261] [2021-11-20 05:39:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:30,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:30,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:30,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:30,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:39:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:30,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:39:30,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:30,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:30,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:30,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572814261] [2021-11-20 05:39:30,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572814261] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:30,917 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:30,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:39:30,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939111194] [2021-11-20 05:39:30,918 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:30,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:39:30,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:39:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:39:30,919 INFO L87 Difference]: Start difference. First operand 2111 states and 3124 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:30,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:30,997 INFO L93 Difference]: Finished difference Result 2099 states and 3104 transitions. [2021-11-20 05:39:30,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:39:30,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-20 05:39:30,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:31,013 INFO L225 Difference]: With dead ends: 2099 [2021-11-20 05:39:31,013 INFO L226 Difference]: Without dead ends: 2099 [2021-11-20 05:39:31,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:31,014 INFO L933 BasicCegarLoop]: 1126 mSDtfsCounter, 1084 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2268 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 [2021-11-20 05:39:31,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 2268 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:31,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2021-11-20 05:39:31,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2099. [2021-11-20 05:39:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1598 states have (on average 1.9148936170212767) internal successors, (3060), 2084 states have internal predecessors, (3060), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:39:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3104 transitions. [2021-11-20 05:39:31,074 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3104 transitions. Word has length 42 [2021-11-20 05:39:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:31,074 INFO L470 AbstractCegarLoop]: Abstraction has 2099 states and 3104 transitions. [2021-11-20 05:39:31,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3104 transitions. [2021-11-20 05:39:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:39:31,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:31,077 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] [2021-11-20 05:39:31,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:31,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:31,293 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2021-11-20 05:39:31,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:31,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161034203] [2021-11-20 05:39:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:31,294 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:31,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:31,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:31,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:39:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:31,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:39:31,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:31,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:32,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:32,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161034203] [2021-11-20 05:39:32,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161034203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:32,369 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:32,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:39:32,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589138668] [2021-11-20 05:39:32,369 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:32,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:39:32,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:39:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:32,371 INFO L87 Difference]: Start difference. First operand 2099 states and 3104 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:32,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:32,481 INFO L93 Difference]: Finished difference Result 1915 states and 2749 transitions. [2021-11-20 05:39:32,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:39:32,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-20 05:39:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:32,497 INFO L225 Difference]: With dead ends: 1915 [2021-11-20 05:39:32,497 INFO L226 Difference]: Without dead ends: 1915 [2021-11-20 05:39:32,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:39:32,498 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 67 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:32,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2173 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:39:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-11-20 05:39:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1915. [2021-11-20 05:39:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1414 states have (on average 1.913012729844413) internal successors, (2705), 1900 states have internal predecessors, (2705), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 05:39:32,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2749 transitions. [2021-11-20 05:39:32,550 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2749 transitions. Word has length 50 [2021-11-20 05:39:32,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:32,550 INFO L470 AbstractCegarLoop]: Abstraction has 1915 states and 2749 transitions. [2021-11-20 05:39:32,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2749 transitions. [2021-11-20 05:39:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 05:39:32,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:32,559 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] [2021-11-20 05:39:32,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:32,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:32,776 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:32,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:32,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2021-11-20 05:39:32,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:32,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993145170] [2021-11-20 05:39:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:32,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:32,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:32,781 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:32,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:39:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:33,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:39:33,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:33,215 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 [2021-11-20 05:39:33,223 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 [2021-11-20 05:39:33,989 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:39:33,990 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 24 treesize of output 26 [2021-11-20 05:39:34,000 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 05:39:34,001 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 23 treesize of output 19 [2021-11-20 05:39:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:34,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:39,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:39,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:39,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993145170] [2021-11-20 05:39:39,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993145170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:39,117 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:39,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:39:39,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812335352] [2021-11-20 05:39:39,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:39,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:39:39,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:39:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 05:39:39,119 INFO L87 Difference]: Start difference. First operand 1915 states and 2749 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:48,378 INFO L93 Difference]: Finished difference Result 2621 states and 3389 transitions. [2021-11-20 05:39:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:39:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-20 05:39:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:48,397 INFO L225 Difference]: With dead ends: 2621 [2021-11-20 05:39:48,397 INFO L226 Difference]: Without dead ends: 2621 [2021-11-20 05:39:48,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-20 05:39:48,398 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 1451 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 4014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2033 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:48,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1458 Valid, 2447 Invalid, 4014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1892 Invalid, 0 Unknown, 2033 Unchecked, 9.1s Time] [2021-11-20 05:39:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2021-11-20 05:39:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2010. [2021-11-20 05:39:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1541 states have (on average 1.8650227125243348) internal successors, (2874), 1992 states have internal predecessors, (2874), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:39:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2924 transitions. [2021-11-20 05:39:48,455 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2924 transitions. Word has length 53 [2021-11-20 05:39:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:48,455 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 2924 transitions. [2021-11-20 05:39:48,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2924 transitions. [2021-11-20 05:39:48,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 05:39:48,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:48,457 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] [2021-11-20 05:39:48,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:48,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:48,673 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:48,674 INFO L85 PathProgramCache]: Analyzing trace with hash -61627503, now seen corresponding path program 1 times [2021-11-20 05:39:48,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:48,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827390969] [2021-11-20 05:39:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:48,675 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:48,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:48,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:48,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:39:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:48,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:39:48,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:49,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:49,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:39:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:49,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:49,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827390969] [2021-11-20 05:39:49,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827390969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:49,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:49,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 05:39:49,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96804608] [2021-11-20 05:39:49,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:49,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:39:49,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:49,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:39:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:49,667 INFO L87 Difference]: Start difference. First operand 2010 states and 2924 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:52,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:52,228 INFO L93 Difference]: Finished difference Result 2008 states and 2920 transitions. [2021-11-20 05:39:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:39:52,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 55 [2021-11-20 05:39:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:52,241 INFO L225 Difference]: With dead ends: 2008 [2021-11-20 05:39:52,242 INFO L226 Difference]: Without dead ends: 2008 [2021-11-20 05:39:52,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:39:52,242 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1976 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:52,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 650 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 05:39:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2008 states. [2021-11-20 05:39:52,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2008 to 2008. [2021-11-20 05:39:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 1541 states have (on average 1.8624269954574952) internal successors, (2870), 1990 states have internal predecessors, (2870), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:39:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 2920 transitions. [2021-11-20 05:39:52,328 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 2920 transitions. Word has length 55 [2021-11-20 05:39:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:52,329 INFO L470 AbstractCegarLoop]: Abstraction has 2008 states and 2920 transitions. [2021-11-20 05:39:52,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 2920 transitions. [2021-11-20 05:39:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 05:39:52,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:52,333 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] [2021-11-20 05:39:52,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:52,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:52,549 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2021-11-20 05:39:52,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:52,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135494128] [2021-11-20 05:39:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:52,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:52,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:52,553 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:52,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:39:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:52,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:39:52,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:52,931 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 [2021-11-20 05:39:52,947 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 [2021-11-20 05:39:52,996 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 [2021-11-20 05:39:53,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:53,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:53,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:53,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135494128] [2021-11-20 05:39:53,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135494128] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:53,163 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:53,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:39:53,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809281418] [2021-11-20 05:39:53,163 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:53,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:39:53,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:53,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:39:53,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:39:53,165 INFO L87 Difference]: Start difference. First operand 2008 states and 2920 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:39:57,097 INFO L93 Difference]: Finished difference Result 2007 states and 2918 transitions. [2021-11-20 05:39:57,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:39:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-20 05:39:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:39:57,108 INFO L225 Difference]: With dead ends: 2007 [2021-11-20 05:39:57,109 INFO L226 Difference]: Without dead ends: 2007 [2021-11-20 05:39:57,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:39:57,110 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:39:57,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2799 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 05:39:57,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-11-20 05:39:57,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2007. [2021-11-20 05:39:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1541 states have (on average 1.8611291369240752) internal successors, (2868), 1989 states have internal predecessors, (2868), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:39:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2918 transitions. [2021-11-20 05:39:57,159 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2918 transitions. Word has length 58 [2021-11-20 05:39:57,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:39:57,159 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 2918 transitions. [2021-11-20 05:39:57,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:39:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2918 transitions. [2021-11-20 05:39:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 05:39:57,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:39:57,161 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] [2021-11-20 05:39:57,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:39:57,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:39:57,376 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:39:57,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:39:57,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2021-11-20 05:39:57,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:39:57,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665182200] [2021-11-20 05:39:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:39:57,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:39:57,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:39:57,380 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:39:57,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:39:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:39:57,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:39:57,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:39:57,801 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 [2021-11-20 05:39:57,826 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 [2021-11-20 05:39:57,846 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 [2021-11-20 05:39:57,920 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 [2021-11-20 05:39:57,925 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 [2021-11-20 05:39:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:57,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:39:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:39:58,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:39:58,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665182200] [2021-11-20 05:39:58,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665182200] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:39:58,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:39:58,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 05:39:58,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442531423] [2021-11-20 05:39:58,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:39:58,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:39:58,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:39:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:39:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:39:58,287 INFO L87 Difference]: Start difference. First operand 2007 states and 2918 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:10,728 INFO L93 Difference]: Finished difference Result 2006 states and 2916 transitions. [2021-11-20 05:40:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:40:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 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 58 [2021-11-20 05:40:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:10,738 INFO L225 Difference]: With dead ends: 2006 [2021-11-20 05:40:10,739 INFO L226 Difference]: Without dead ends: 2006 [2021-11-20 05:40:10,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:40:10,740 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 4 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:10,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3269 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2021-11-20 05:40:10,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2021-11-20 05:40:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2006. [2021-11-20 05:40:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1539 states have (on average 1.8622482131254061) internal successors, (2866), 1988 states have internal predecessors, (2866), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 16 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 05:40:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2916 transitions. [2021-11-20 05:40:10,827 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2916 transitions. Word has length 58 [2021-11-20 05:40:10,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:10,827 INFO L470 AbstractCegarLoop]: Abstraction has 2006 states and 2916 transitions. [2021-11-20 05:40:10,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:40:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2916 transitions. [2021-11-20 05:40:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 05:40:10,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:10,829 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] [2021-11-20 05:40:10,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:11,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:11,045 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:40:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:11,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2021-11-20 05:40:11,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:11,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072139677] [2021-11-20 05:40:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:11,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:11,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:11,050 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:11,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:40:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:11,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:40:11,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:11,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:11,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:11,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072139677] [2021-11-20 05:40:11,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072139677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:11,696 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:11,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:40:11,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269134785] [2021-11-20 05:40:11,696 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:11,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:40:11,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:11,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:40:11,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:40:11,698 INFO L87 Difference]: Start difference. First operand 2006 states and 2916 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:11,892 INFO L93 Difference]: Finished difference Result 2016 states and 2933 transitions. [2021-11-20 05:40:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:40:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2021-11-20 05:40:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:11,914 INFO L225 Difference]: With dead ends: 2016 [2021-11-20 05:40:11,915 INFO L226 Difference]: Without dead ends: 2016 [2021-11-20 05:40:11,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:40:11,916 INFO L933 BasicCegarLoop]: 1094 mSDtfsCounter, 9 mSDsluCounter, 3265 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:11,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:40:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-11-20 05:40:11,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2016. [2021-11-20 05:40:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1547 states have (on average 1.8603749191984487) internal successors, (2878), 1997 states have internal predecessors, (2878), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-20 05:40:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2933 transitions. [2021-11-20 05:40:11,984 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2933 transitions. Word has length 66 [2021-11-20 05:40:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:11,985 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 2933 transitions. [2021-11-20 05:40:11,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:11,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2933 transitions. [2021-11-20 05:40:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 05:40:11,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:11,988 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] [2021-11-20 05:40:12,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:12,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:12,204 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:40:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:12,205 INFO L85 PathProgramCache]: Analyzing trace with hash -722171842, now seen corresponding path program 1 times [2021-11-20 05:40:12,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:12,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505606348] [2021-11-20 05:40:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:12,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:12,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:12,208 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:12,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:40:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:12,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:40:12,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:12,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:12,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:12,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505606348] [2021-11-20 05:40:12,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505606348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:40:12,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:40:12,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-20 05:40:12,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739976061] [2021-11-20 05:40:12,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:40:12,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:40:12,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:40:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:40:12,908 INFO L87 Difference]: Start difference. First operand 2016 states and 2933 transitions. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:13,371 INFO L93 Difference]: Finished difference Result 2030 states and 2959 transitions. [2021-11-20 05:40:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:40:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2021-11-20 05:40:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:13,382 INFO L225 Difference]: With dead ends: 2030 [2021-11-20 05:40:13,382 INFO L226 Difference]: Without dead ends: 2026 [2021-11-20 05:40:13,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:40:13,384 INFO L933 BasicCegarLoop]: 1096 mSDtfsCounter, 27 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 5457 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:13,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 5457 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:40:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-11-20 05:40:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2022. [2021-11-20 05:40:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1553 states have (on average 1.8583386992916935) internal successors, (2886), 2003 states have internal predecessors, (2886), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-20 05:40:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2941 transitions. [2021-11-20 05:40:13,429 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2941 transitions. Word has length 68 [2021-11-20 05:40:13,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:13,430 INFO L470 AbstractCegarLoop]: Abstraction has 2022 states and 2941 transitions. [2021-11-20 05:40:13,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2941 transitions. [2021-11-20 05:40:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-20 05:40:13,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:13,431 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] [2021-11-20 05:40:13,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:13,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:13,648 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:40:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash 337093118, now seen corresponding path program 2 times [2021-11-20 05:40:13,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:13,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153190906] [2021-11-20 05:40:13,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:40:13,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:13,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:13,651 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:13,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:40:14,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:40:14,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:40:14,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:40:14,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:14,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:15,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:15,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153190906] [2021-11-20 05:40:15,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153190906] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:40:15,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:40:15,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-20 05:40:15,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198047462] [2021-11-20 05:40:15,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:40:15,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:40:15,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:40:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:40:15,109 INFO L87 Difference]: Start difference. First operand 2022 states and 2941 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:17,477 INFO L93 Difference]: Finished difference Result 2050 states and 3013 transitions. [2021-11-20 05:40:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 05:40:17,478 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2021-11-20 05:40:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:17,484 INFO L225 Difference]: With dead ends: 2050 [2021-11-20 05:40:17,485 INFO L226 Difference]: Without dead ends: 2044 [2021-11-20 05:40:17,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=369, Invalid=687, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 05:40:17,486 INFO L933 BasicCegarLoop]: 1098 mSDtfsCounter, 78 mSDsluCounter, 7646 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 8744 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:17,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 8744 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:40:17,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2021-11-20 05:40:17,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 2034. [2021-11-20 05:40:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2034 states, 1565 states have (on average 1.8536741214057508) internal successors, (2901), 2015 states have internal predecessors, (2901), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-20 05:40:17,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2956 transitions. [2021-11-20 05:40:17,534 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2956 transitions. Word has length 72 [2021-11-20 05:40:17,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:17,534 INFO L470 AbstractCegarLoop]: Abstraction has 2034 states and 2956 transitions. [2021-11-20 05:40:17,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2956 transitions. [2021-11-20 05:40:17,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-20 05:40:17,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:17,536 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] [2021-11-20 05:40:17,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:17,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:17,753 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:40:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1025165954, now seen corresponding path program 3 times [2021-11-20 05:40:17,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:17,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250332059] [2021-11-20 05:40:17,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:40:17,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:17,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:17,756 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:17,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:40:18,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 05:40:18,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:40:18,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:40:18,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:18,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:20,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:20,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250332059] [2021-11-20 05:40:20,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250332059] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:40:20,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:40:20,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-20 05:40:20,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501835655] [2021-11-20 05:40:20,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:40:20,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 05:40:20,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 05:40:20,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 05:40:20,818 INFO L87 Difference]: Start difference. First operand 2034 states and 2956 transitions. Second operand has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:31,270 INFO L93 Difference]: Finished difference Result 2088 states and 3129 transitions. [2021-11-20 05:40:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 05:40:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2021-11-20 05:40:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:31,276 INFO L225 Difference]: With dead ends: 2088 [2021-11-20 05:40:31,276 INFO L226 Difference]: Without dead ends: 2082 [2021-11-20 05:40:31,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-20 05:40:31,279 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 238 mSDsluCounter, 17584 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 18689 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:31,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 18689 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 05:40:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-11-20 05:40:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2058. [2021-11-20 05:40:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 1589 states have (on average 1.8451856513530522) internal successors, (2932), 2039 states have internal predecessors, (2932), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-20 05:40:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2987 transitions. [2021-11-20 05:40:31,331 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2987 transitions. Word has length 80 [2021-11-20 05:40:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:31,332 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 2987 transitions. [2021-11-20 05:40:31,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2987 transitions. [2021-11-20 05:40:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-20 05:40:31,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:31,333 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] [2021-11-20 05:40:31,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:31,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:31,548 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:40:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash 383638654, now seen corresponding path program 4 times [2021-11-20 05:40:31,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:31,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042449869] [2021-11-20 05:40:31,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:40:31,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:31,550 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:31,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:40:31,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:40:31,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:40:31,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 05:40:31,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:33,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:37,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:37,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042449869] [2021-11-20 05:40:37,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042449869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:40:37,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:40:37,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-20 05:40:37,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109798439] [2021-11-20 05:40:37,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:40:37,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-20 05:40:37,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-20 05:40:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-20 05:40:37,482 INFO L87 Difference]: Start difference. First operand 2058 states and 2987 transitions. Second operand has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 66 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:54,892 INFO L93 Difference]: Finished difference Result 2148 states and 3217 transitions. [2021-11-20 05:40:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-20 05:40:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 66 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 96 [2021-11-20 05:40:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:54,900 INFO L225 Difference]: With dead ends: 2148 [2021-11-20 05:40:54,900 INFO L226 Difference]: Without dead ends: 2144 [2021-11-20 05:40:54,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2254 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4454, Invalid=14452, Unknown=0, NotChecked=0, Total=18906 [2021-11-20 05:40:54,909 INFO L933 BasicCegarLoop]: 1122 mSDtfsCounter, 253 mSDsluCounter, 37893 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 39015 SdHoareTripleChecker+Invalid, 5637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:54,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 39015 Invalid, 5637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [497 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2021-11-20 05:40:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-11-20 05:40:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2088. [2021-11-20 05:40:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1619 states have (on average 1.8394070413835701) internal successors, (2978), 2069 states have internal predecessors, (2978), 25 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (30), 16 states have call predecessors, (30), 25 states have call successors, (30) [2021-11-20 05:40:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3033 transitions. [2021-11-20 05:40:54,964 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3033 transitions. Word has length 96 [2021-11-20 05:40:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:54,964 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 3033 transitions. [2021-11-20 05:40:54,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 66 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3033 transitions. [2021-11-20 05:40:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-20 05:40:54,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:54,966 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] [2021-11-20 05:40:54,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:55,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:55,185 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 644 more)] === [2021-11-20 05:40:55,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1185723038, now seen corresponding path program 5 times [2021-11-20 05:40:55,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840356134] [2021-11-20 05:40:55,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:40:55,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:55,188 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:55,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:40:56,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-20 05:40:56,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:40:56,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-20 05:40:56,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:56,517 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-20 05:40:56,517 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 13 treesize of output 22 [2021-11-20 05:40:58,497 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-20 05:40:58,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 57 [2021-11-20 05:40:58,727 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 59 treesize of output 55 [2021-11-20 05:40:59,657 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 73 treesize of output 55 [2021-11-20 05:52:01,416 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-20 05:52:01,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840356134] [2021-11-20 05:52:01,417 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-20 05:52:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1026607046] [2021-11-20 05:52:01,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:52:01,418 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 05:52:01,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 05:52:01,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-20 05:52:01,419 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 05:52:01,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85033521-37ac-40dc-b600-c62ec808f56b/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process