./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0 --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:21:46,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:21:46,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:21:46,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:21:46,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:21:46,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:21:46,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:21:46,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:21:46,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:21:46,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:21:46,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:21:46,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:21:46,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:21:46,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:21:46,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:21:46,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:21:46,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:21:46,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:21:46,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:21:46,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:21:46,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:21:46,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:21:46,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:21:46,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:21:46,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:21:46,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:21:46,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:21:46,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:21:46,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:21:46,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:21:46,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:21:46,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:21:46,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:21:46,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:21:46,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:21:46,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:21:46,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:21:46,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:21:46,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:21:46,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:21:46,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:21:46,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 14:21:46,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:21:46,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:21:46,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:21:46,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:21:46,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:21:46,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:21:46,713 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:21:46,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:21:46,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:21:46,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 14:21:46,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:21:46,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:21:46,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:21:46,715 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 14:21:46,715 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 14:21:46,715 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 14:21:46,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:21:46,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 14:21:46,716 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:21:46,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:21:46,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:21:46,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:21:46,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:21:46,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:21:46,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:21:46,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:21:46,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:21:46,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:21:46,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:21:46,719 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_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-22 14:21:47,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:21:47,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:21:47,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:21:47,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:21:47,097 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:21:47,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-22 14:21:47,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/d1f7e50d9/4a700d6c96004d8fb2cc7e2dc5f6690d/FLAG0b32d1e54 [2021-11-22 14:21:47,900 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:21:47,902 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-22 14:21:47,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/d1f7e50d9/4a700d6c96004d8fb2cc7e2dc5f6690d/FLAG0b32d1e54 [2021-11-22 14:21:48,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/d1f7e50d9/4a700d6c96004d8fb2cc7e2dc5f6690d [2021-11-22 14:21:48,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:21:48,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:21:48,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:21:48,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:21:48,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:21:48,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:48" (1/1) ... [2021-11-22 14:21:48,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d52b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:48, skipping insertion in model container [2021-11-22 14:21:48,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:48" (1/1) ... [2021-11-22 14:21:48,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:21:48,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:21:48,731 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-22 14:21:48,743 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-22 14:21:48,865 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-22 14:21:48,866 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-22 14:21:48,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:21:48,894 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) [2021-11-22 14:21:48,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a9f3c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:48, skipping insertion in model container [2021-11-22 14:21:48,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:21:48,896 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-22 14:21:48,898 INFO L158 Benchmark]: Toolchain (without parser) took 832.21ms. Allocated memory is still 100.7MB. Free memory was 55.6MB in the beginning and 63.3MB in the end (delta: -7.7MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-11-22 14:21:48,898 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:21:48,899 INFO L158 Benchmark]: CACSL2BoogieTranslator took 829.72ms. Allocated memory is still 100.7MB. Free memory was 55.5MB in the beginning and 63.3MB in the end (delta: -7.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-11-22 14:21:48,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 829.72ms. Allocated memory is still 100.7MB. Free memory was 55.5MB in the beginning and 63.3MB in the end (delta: -7.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0 --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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:21:51,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:21:51,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:21:51,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:21:51,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:21:51,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:21:51,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:21:51,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:21:51,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:21:51,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:21:51,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:21:51,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:21:51,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:21:51,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:21:51,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:21:51,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:21:51,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:21:51,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:21:51,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:21:51,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:21:51,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:21:51,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:21:51,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:21:51,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:21:51,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:21:51,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:21:51,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:21:51,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:21:51,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:21:51,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:21:51,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:21:51,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:21:51,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:21:51,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:21:51,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:21:51,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:21:51,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:21:51,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:21:51,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:21:51,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:21:51,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:21:51,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-22 14:21:51,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:21:51,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:21:51,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:21:51,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:21:51,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:21:51,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:21:51,276 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:21:51,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:21:51,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:21:51,276 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 14:21:51,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:21:51,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:21:51,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:21:51,278 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 14:21:51,278 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 14:21:51,279 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 14:21:51,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:21:51,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 14:21:51,279 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 14:21:51,279 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 14:21:51,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:21:51,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:21:51,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:21:51,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:21:51,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:21:51,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:21:51,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:21:51,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:21:51,281 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 14:21:51,281 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 14:21:51,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:21:51,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 14:21:51,282 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_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2021-11-22 14:21:51,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:21:51,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:21:51,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:21:51,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:21:51,704 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:21:51,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-22 14:21:51,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/b19f17fec/7cda74b794104c74b252519611dd7fce/FLAGd3c5b20a8 [2021-11-22 14:21:52,589 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:21:52,590 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2021-11-22 14:21:52,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/b19f17fec/7cda74b794104c74b252519611dd7fce/FLAGd3c5b20a8 [2021-11-22 14:21:52,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/data/b19f17fec/7cda74b794104c74b252519611dd7fce [2021-11-22 14:21:52,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:21:52,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:21:52,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:21:52,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:21:52,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:21:52,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:52" (1/1) ... [2021-11-22 14:21:52,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d4b39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:52, skipping insertion in model container [2021-11-22 14:21:52,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:21:52" (1/1) ... [2021-11-22 14:21:52,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:21:52,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:21:53,411 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-22 14:21:53,436 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-22 14:21:53,572 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-22 14:21:53,573 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-22 14:21:53,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:21:53,621 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 14:21:53,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:21:53,674 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-22 14:21:53,676 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-22 14:21:53,773 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-22 14:21:53,774 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-22 14:21:53,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:21:53,808 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:21:53,857 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2021-11-22 14:21:53,861 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2021-11-22 14:21:53,913 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2021-11-22 14:21:53,914 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_8778f840-7bb3-4747-8c6b-45f019cc138a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2021-11-22 14:21:53,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:21:54,013 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:21:54,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54 WrapperNode [2021-11-22 14:21:54,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:21:54,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:21:54,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:21:54,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:21:54,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,171 INFO L137 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 22, calls inlined = 26, statements flattened = 1363 [2021-11-22 14:21:54,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:21:54,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:21:54,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:21:54,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:21:54,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:21:54,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:21:54,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:21:54,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:21:54,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (1/1) ... [2021-11-22 14:21:54,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:21:54,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:21:54,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:21:54,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:21:54,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-22 14:21:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-22 14:21:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:21:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-22 14:21:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 14:21:54,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:21:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-22 14:21:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 14:21:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:21:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:21:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 14:21:54,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:21:54,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:21:54,816 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:21:54,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:22:00,794 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:22:00,812 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:22:00,813 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-22 14:22:00,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:00 BoogieIcfgContainer [2021-11-22 14:22:00,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:22:00,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:22:00,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:22:00,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:22:00,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:21:52" (1/3) ... [2021-11-22 14:22:00,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8eb23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:00, skipping insertion in model container [2021-11-22 14:22:00,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:21:54" (2/3) ... [2021-11-22 14:22:00,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c8eb23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:22:00, skipping insertion in model container [2021-11-22 14:22:00,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:22:00" (3/3) ... [2021-11-22 14:22:00,825 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2021-11-22 14:22:00,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:22:00,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 677 error locations. [2021-11-22 14:22:00,873 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:22:00,879 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 [2021-11-22 14:22:00,880 INFO L340 AbstractCegarLoop]: Starting to check reachability of 677 error locations. [2021-11-22 14:22:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 1377 states, 699 states have (on average 2.1974248927038627) internal successors, (1536), 1376 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-22 14:22:00,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:00,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-22 14:22:00,926 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-22 14:22:00,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:00,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198660054] [2021-11-22 14:22:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:00,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:00,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:00,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:00,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 14:22:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:01,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:22:01,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:01,231 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 [2021-11-22 14:22:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:01,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:01,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:01,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198660054] [2021-11-22 14:22:01,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198660054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:01,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:01,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 14:22:01,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194128910] [2021-11-22 14:22:01,278 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:01,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:22:01,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:01,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:22:01,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:22:01,347 INFO L87 Difference]: Start difference. First operand has 1377 states, 699 states have (on average 2.1974248927038627) internal successors, (1536), 1376 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:04,545 INFO L93 Difference]: Finished difference Result 1551 states and 1629 transitions. [2021-11-22 14:22:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:22:04,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-22 14:22:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:04,575 INFO L225 Difference]: With dead ends: 1551 [2021-11-22 14:22:04,575 INFO L226 Difference]: Without dead ends: 1549 [2021-11-22 14:22:04,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:22:04,581 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1271 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:04,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 1008 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-22 14:22:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2021-11-22 14:22:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1349. [2021-11-22 14:22:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 691 states have (on average 2.053545586107091) internal successors, (1419), 1348 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1419 transitions. [2021-11-22 14:22:04,684 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1419 transitions. Word has length 3 [2021-11-22 14:22:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:04,684 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 1419 transitions. [2021-11-22 14:22:04,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1419 transitions. [2021-11-22 14:22:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-22 14:22:04,685 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:04,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-22 14:22:04,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:04,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:04,897 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-22 14:22:04,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:04,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123274897] [2021-11-22 14:22:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:04,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:04,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:04,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:04,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 14:22:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:05,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:22:05,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:05,067 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 [2021-11-22 14:22:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:05,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:05,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:05,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123274897] [2021-11-22 14:22:05,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123274897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:05,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:05,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-22 14:22:05,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627978826] [2021-11-22 14:22:05,139 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:05,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:22:05,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:22:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:05,142 INFO L87 Difference]: Start difference. First operand 1349 states and 1419 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:11,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:11,082 INFO L93 Difference]: Finished difference Result 2077 states and 2190 transitions. [2021-11-22 14:22:11,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:22:11,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-22 14:22:11,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:11,095 INFO L225 Difference]: With dead ends: 2077 [2021-11-22 14:22:11,096 INFO L226 Difference]: Without dead ends: 2077 [2021-11-22 14:22:11,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:11,098 INFO L933 BasicCegarLoop]: 974 mSDtfsCounter, 1683 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:11,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 1990 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-22 14:22:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2021-11-22 14:22:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 1385. [2021-11-22 14:22:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 736 states have (on average 2.036684782608696) internal successors, (1499), 1384 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:11,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1499 transitions. [2021-11-22 14:22:11,140 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1499 transitions. Word has length 3 [2021-11-22 14:22:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:11,140 INFO L470 AbstractCegarLoop]: Abstraction has 1385 states and 1499 transitions. [2021-11-22 14:22:11,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:11,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1499 transitions. [2021-11-22 14:22:11,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 14:22:11,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:11,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:11,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-22 14:22:11,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:11,352 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:11,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648752, now seen corresponding path program 1 times [2021-11-22 14:22:11,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:11,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483091266] [2021-11-22 14:22:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:11,354 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:11,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:11,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 14:22:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:11,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:22:11,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:11,535 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 [2021-11-22 14:22:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:11,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:11,617 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:11,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483091266] [2021-11-22 14:22:11,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483091266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:11,617 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:11,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 14:22:11,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667245608] [2021-11-22 14:22:11,618 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:11,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:22:11,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:11,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:22:11,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:11,620 INFO L87 Difference]: Start difference. First operand 1385 states and 1499 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:15,542 INFO L93 Difference]: Finished difference Result 1944 states and 2093 transitions. [2021-11-22 14:22:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:22:15,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 14:22:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:15,556 INFO L225 Difference]: With dead ends: 1944 [2021-11-22 14:22:15,556 INFO L226 Difference]: Without dead ends: 1944 [2021-11-22 14:22:15,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:22:15,565 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 2277 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:15,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 2289 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 14:22:15,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2021-11-22 14:22:15,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1337. [2021-11-22 14:22:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 736 states have (on average 1.9673913043478262) internal successors, (1448), 1336 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1448 transitions. [2021-11-22 14:22:15,612 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1448 transitions. Word has length 9 [2021-11-22 14:22:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:15,613 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1448 transitions. [2021-11-22 14:22:15,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1448 transitions. [2021-11-22 14:22:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 14:22:15,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:15,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:15,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:15,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:15,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1929648753, now seen corresponding path program 1 times [2021-11-22 14:22:15,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:15,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66172649] [2021-11-22 14:22:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:15,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:15,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:15,829 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:15,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 14:22:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:15,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 14:22:15,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:16,027 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 [2021-11-22 14:22:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:16,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:16,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:16,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66172649] [2021-11-22 14:22:16,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66172649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:16,223 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:16,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 14:22:16,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394528629] [2021-11-22 14:22:16,223 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:16,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:22:16,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:22:16,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:22:16,225 INFO L87 Difference]: Start difference. First operand 1337 states and 1448 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:26,103 INFO L93 Difference]: Finished difference Result 2037 states and 2151 transitions. [2021-11-22 14:22:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:22:26,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 14:22:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:26,118 INFO L225 Difference]: With dead ends: 2037 [2021-11-22 14:22:26,118 INFO L226 Difference]: Without dead ends: 2037 [2021-11-22 14:22:26,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:22:26,120 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 2426 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:26,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2426 Valid, 3584 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-22 14:22:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2021-11-22 14:22:26,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1327. [2021-11-22 14:22:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 736 states have (on average 1.9497282608695652) internal successors, (1435), 1326 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1435 transitions. [2021-11-22 14:22:26,158 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1435 transitions. Word has length 9 [2021-11-22 14:22:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:26,159 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1435 transitions. [2021-11-22 14:22:26,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1435 transitions. [2021-11-22 14:22:26,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 14:22:26,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:26,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:26,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:26,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:26,373 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr555ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1986319691, now seen corresponding path program 1 times [2021-11-22 14:22:26,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:26,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109762775] [2021-11-22 14:22:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:26,374 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:26,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:26,375 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:26,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 14:22:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:26,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 14:22:26,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:26,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:26,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:26,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109762775] [2021-11-22 14:22:26,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109762775] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:26,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:26,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 14:22:26,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614437906] [2021-11-22 14:22:26,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:26,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:22:26,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:26,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:22:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:26,719 INFO L87 Difference]: Start difference. First operand 1327 states and 1435 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:27,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:27,733 INFO L93 Difference]: Finished difference Result 2032 states and 2182 transitions. [2021-11-22 14:22:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:22:27,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 14:22:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:27,746 INFO L225 Difference]: With dead ends: 2032 [2021-11-22 14:22:27,746 INFO L226 Difference]: Without dead ends: 2032 [2021-11-22 14:22:27,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:22:27,748 INFO L933 BasicCegarLoop]: 1475 mSDtfsCounter, 877 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:27,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 3948 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 14:22:27,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2021-11-22 14:22:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1576. [2021-11-22 14:22:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 985 states have (on average 1.9299492385786803) internal successors, (1901), 1575 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1901 transitions. [2021-11-22 14:22:27,792 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1901 transitions. Word has length 11 [2021-11-22 14:22:27,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:27,792 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 1901 transitions. [2021-11-22 14:22:27,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1901 transitions. [2021-11-22 14:22:27,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 14:22:27,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:27,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:27,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-22 14:22:28,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:28,006 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr558ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:28,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:28,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1887735742, now seen corresponding path program 1 times [2021-11-22 14:22:28,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:28,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605127139] [2021-11-22 14:22:28,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:28,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:28,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:28,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:28,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 14:22:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:28,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:22:28,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:28,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:22:28,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:22:28,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 14:22:28,309 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-22 14:22:28,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-22 14:22:28,374 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-22 14:22:28,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-22 14:22:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:28,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:28,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:28,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605127139] [2021-11-22 14:22:28,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605127139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:28,458 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:28,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 14:22:28,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497637303] [2021-11-22 14:22:28,458 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:28,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:22:28,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:28,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:22:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:22:28,460 INFO L87 Difference]: Start difference. First operand 1576 states and 1901 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:30,538 INFO L93 Difference]: Finished difference Result 2139 states and 2531 transitions. [2021-11-22 14:22:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:22:30,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 14:22:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:30,550 INFO L225 Difference]: With dead ends: 2139 [2021-11-22 14:22:30,550 INFO L226 Difference]: Without dead ends: 2139 [2021-11-22 14:22:30,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:22:30,552 INFO L933 BasicCegarLoop]: 1281 mSDtfsCounter, 1132 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:30,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 3722 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 14:22:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2021-11-22 14:22:30,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1575. [2021-11-22 14:22:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 984 states have (on average 1.9298780487804879) internal successors, (1899), 1574 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 1899 transitions. [2021-11-22 14:22:30,593 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 1899 transitions. Word has length 13 [2021-11-22 14:22:30,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:30,594 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 1899 transitions. [2021-11-22 14:22:30,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:30,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 1899 transitions. [2021-11-22 14:22:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 14:22:30,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:30,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:30,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:30,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:30,809 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1153072931, now seen corresponding path program 1 times [2021-11-22 14:22:30,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:30,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192754493] [2021-11-22 14:22:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:30,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:30,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:30,810 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:30,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 14:22:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:31,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:22:31,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:31,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:31,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:31,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:31,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192754493] [2021-11-22 14:22:31,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192754493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:31,093 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:31,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-22 14:22:31,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370481271] [2021-11-22 14:22:31,094 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:31,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:22:31,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:31,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:22:31,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:31,095 INFO L87 Difference]: Start difference. First operand 1575 states and 1899 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:31,129 INFO L93 Difference]: Finished difference Result 1515 states and 1813 transitions. [2021-11-22 14:22:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:22:31,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-22 14:22:31,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:31,136 INFO L225 Difference]: With dead ends: 1515 [2021-11-22 14:22:31,136 INFO L226 Difference]: Without dead ends: 1515 [2021-11-22 14:22:31,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:31,137 INFO L933 BasicCegarLoop]: 1305 mSDtfsCounter, 1299 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1335 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 [2021-11-22 14:22:31,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 1335 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:22:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2021-11-22 14:22:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2021-11-22 14:22:31,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 948 states have (on average 1.9124472573839661) internal successors, (1813), 1514 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:31,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1813 transitions. [2021-11-22 14:22:31,167 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1813 transitions. Word has length 19 [2021-11-22 14:22:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:31,167 INFO L470 AbstractCegarLoop]: Abstraction has 1515 states and 1813 transitions. [2021-11-22 14:22:31,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:31,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1813 transitions. [2021-11-22 14:22:31,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 14:22:31,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:31,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:31,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:31,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:31,385 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1529130, now seen corresponding path program 1 times [2021-11-22 14:22:31,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:31,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604781940] [2021-11-22 14:22:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:31,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:31,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:31,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 14:22:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:31,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:22:31,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:31,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:31,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:31,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604781940] [2021-11-22 14:22:31,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604781940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:31,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:31,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-22 14:22:31,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459156418] [2021-11-22 14:22:31,666 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:31,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:22:31,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:22:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:22:31,668 INFO L87 Difference]: Start difference. First operand 1515 states and 1813 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:31,769 INFO L93 Difference]: Finished difference Result 1487 states and 1757 transitions. [2021-11-22 14:22:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:22:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-22 14:22:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:31,778 INFO L225 Difference]: With dead ends: 1487 [2021-11-22 14:22:31,779 INFO L226 Difference]: Without dead ends: 1487 [2021-11-22 14:22:31,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:22:31,780 INFO L933 BasicCegarLoop]: 1260 mSDtfsCounter, 2530 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:31,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2530 Valid, 2528 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:22:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-22 14:22:31,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1485. [2021-11-22 14:22:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 932 states have (on average 1.8830472103004292) internal successors, (1755), 1484 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1755 transitions. [2021-11-22 14:22:31,816 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1755 transitions. Word has length 21 [2021-11-22 14:22:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:31,816 INFO L470 AbstractCegarLoop]: Abstraction has 1485 states and 1755 transitions. [2021-11-22 14:22:31,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1755 transitions. [2021-11-22 14:22:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 14:22:31,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:31,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:31,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:32,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:32,032 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:32,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 270814884, now seen corresponding path program 1 times [2021-11-22 14:22:32,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:32,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455233268] [2021-11-22 14:22:32,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:32,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:32,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:32,036 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:32,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 14:22:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:32,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 14:22:32,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:32,255 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 [2021-11-22 14:22:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:32,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:32,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:32,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455233268] [2021-11-22 14:22:32,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455233268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:32,512 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:32,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 14:22:32,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098453496] [2021-11-22 14:22:32,513 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:32,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:22:32,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:22:32,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:22:32,514 INFO L87 Difference]: Start difference. First operand 1485 states and 1755 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:36,145 INFO L93 Difference]: Finished difference Result 2175 states and 2575 transitions. [2021-11-22 14:22:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:22:36,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-22 14:22:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:36,155 INFO L225 Difference]: With dead ends: 2175 [2021-11-22 14:22:36,155 INFO L226 Difference]: Without dead ends: 2175 [2021-11-22 14:22:36,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:22:36,156 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 3195 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3195 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:36,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3195 Valid, 1943 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 14:22:36,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2021-11-22 14:22:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1481. [2021-11-22 14:22:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 932 states have (on average 1.8744635193133048) internal successors, (1747), 1480 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:36,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1747 transitions. [2021-11-22 14:22:36,202 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1747 transitions. Word has length 35 [2021-11-22 14:22:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:36,202 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 1747 transitions. [2021-11-22 14:22:36,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1747 transitions. [2021-11-22 14:22:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 14:22:36,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:36,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:36,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:36,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:36,416 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash 270814885, now seen corresponding path program 1 times [2021-11-22 14:22:36,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:36,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829508804] [2021-11-22 14:22:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:36,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:36,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:36,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:36,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 14:22:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:36,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 14:22:36,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:36,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 14:22:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:36,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:37,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:37,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829508804] [2021-11-22 14:22:37,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829508804] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:37,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:37,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-22 14:22:37,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872480612] [2021-11-22 14:22:37,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:37,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:22:37,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:22:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:22:37,475 INFO L87 Difference]: Start difference. First operand 1481 states and 1747 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:50,818 INFO L93 Difference]: Finished difference Result 2366 states and 2793 transitions. [2021-11-22 14:22:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:22:50,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-22 14:22:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:50,830 INFO L225 Difference]: With dead ends: 2366 [2021-11-22 14:22:50,830 INFO L226 Difference]: Without dead ends: 2366 [2021-11-22 14:22:50,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:22:50,831 INFO L933 BasicCegarLoop]: 1675 mSDtfsCounter, 3294 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 3389 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 5014 SdHoareTripleChecker+Invalid, 3398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:50,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3294 Valid, 5014 Invalid, 3398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3389 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2021-11-22 14:22:50,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2021-11-22 14:22:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 1477. [2021-11-22 14:22:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 932 states have (on average 1.8658798283261802) internal successors, (1739), 1476 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1739 transitions. [2021-11-22 14:22:50,890 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1739 transitions. Word has length 35 [2021-11-22 14:22:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:50,891 INFO L470 AbstractCegarLoop]: Abstraction has 1477 states and 1739 transitions. [2021-11-22 14:22:50,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1739 transitions. [2021-11-22 14:22:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 14:22:50,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:50,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:50,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:51,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:51,110 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:51,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1615578914, now seen corresponding path program 1 times [2021-11-22 14:22:51,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:51,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952860956] [2021-11-22 14:22:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:51,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:51,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:51,113 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:51,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 14:22:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:51,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:22:51,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:51,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:51,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:51,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952860956] [2021-11-22 14:22:51,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952860956] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:51,716 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:51,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 14:22:51,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996442989] [2021-11-22 14:22:51,716 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:51,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:22:51,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:22:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:22:51,718 INFO L87 Difference]: Start difference. First operand 1477 states and 1739 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:51,795 INFO L93 Difference]: Finished difference Result 1465 states and 1719 transitions. [2021-11-22 14:22:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:22:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-22 14:22:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:51,806 INFO L225 Difference]: With dead ends: 1465 [2021-11-22 14:22:51,806 INFO L226 Difference]: Without dead ends: 1465 [2021-11-22 14:22:51,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:22:51,808 INFO L933 BasicCegarLoop]: 1254 mSDtfsCounter, 1246 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2506 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 [2021-11-22 14:22:51,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1246 Valid, 2506 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:22:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-11-22 14:22:51,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1465. [2021-11-22 14:22:51,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 920 states have (on average 1.8684782608695651) internal successors, (1719), 1464 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:51,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1719 transitions. [2021-11-22 14:22:51,839 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1719 transitions. Word has length 53 [2021-11-22 14:22:51,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:51,839 INFO L470 AbstractCegarLoop]: Abstraction has 1465 states and 1719 transitions. [2021-11-22 14:22:51,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:51,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1719 transitions. [2021-11-22 14:22:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 14:22:51,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:51,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:51,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:52,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:52,057 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136622, now seen corresponding path program 1 times [2021-11-22 14:22:52,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:52,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122710048] [2021-11-22 14:22:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:52,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:52,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:52,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:52,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-22 14:22:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:52,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 14:22:52,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:52,593 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 14:22:52,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-22 14:22:52,819 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-22 14:22:52,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 50 [2021-11-22 14:22:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:54,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:22:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:22:56,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:22:56,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122710048] [2021-11-22 14:22:56,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122710048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:22:56,835 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:22:56,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-11-22 14:22:56,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141152736] [2021-11-22 14:22:56,835 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:22:56,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:22:56,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:22:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:22:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-11-22 14:22:56,836 INFO L87 Difference]: Start difference. First operand 1465 states and 1719 transitions. Second operand has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:56,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:22:56,877 INFO L93 Difference]: Finished difference Result 1469 states and 1724 transitions. [2021-11-22 14:22:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:22:56,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-22 14:22:56,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:22:56,885 INFO L225 Difference]: With dead ends: 1469 [2021-11-22 14:22:56,886 INFO L226 Difference]: Without dead ends: 1469 [2021-11-22 14:22:56,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-11-22 14:22:56,887 INFO L933 BasicCegarLoop]: 1235 mSDtfsCounter, 40 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 569 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:22:56,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 3336 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 569 Unchecked, 0.0s Time] [2021-11-22 14:22:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-22 14:22:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2021-11-22 14:22:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 924 states have (on average 1.8658008658008658) internal successors, (1724), 1468 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1724 transitions. [2021-11-22 14:22:56,918 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1724 transitions. Word has length 61 [2021-11-22 14:22:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:22:56,919 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 1724 transitions. [2021-11-22 14:22:56,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:22:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1724 transitions. [2021-11-22 14:22:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 14:22:56,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:22:56,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:22:56,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-22 14:22:57,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:22:57,138 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:22:57,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:22:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1057136623, now seen corresponding path program 1 times [2021-11-22 14:22:57,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:22:57,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589442578] [2021-11-22 14:22:57,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:22:57,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:22:57,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:22:57,140 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:22:57,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-22 14:22:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:22:57,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 14:22:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:22:57,687 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 14:22:57,687 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 26 treesize of output 28 [2021-11-22 14:22:57,693 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 14:22:57,694 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 25 treesize of output 21 [2021-11-22 14:22:57,861 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-22 14:22:57,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-22 14:23:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:04,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:23:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:07,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:23:07,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589442578] [2021-11-22 14:23:07,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589442578] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:23:07,064 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:23:07,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-22 14:23:07,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191463906] [2021-11-22 14:23:07,064 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:23:07,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 14:23:07,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:23:07,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 14:23:07,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 14:23:07,065 INFO L87 Difference]: Start difference. First operand 1469 states and 1724 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:23:15,393 INFO L93 Difference]: Finished difference Result 1469 states and 1723 transitions. [2021-11-22 14:23:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:23:15,394 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-22 14:23:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:23:15,402 INFO L225 Difference]: With dead ends: 1469 [2021-11-22 14:23:15,402 INFO L226 Difference]: Without dead ends: 1469 [2021-11-22 14:23:15,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-22 14:23:15,403 INFO L933 BasicCegarLoop]: 1235 mSDtfsCounter, 78 mSDsluCounter, 3476 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4711 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2014 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:23:15,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4711 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1400 Invalid, 0 Unknown, 2014 Unchecked, 8.2s Time] [2021-11-22 14:23:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2021-11-22 14:23:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1469. [2021-11-22 14:23:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 924 states have (on average 1.8647186147186148) internal successors, (1723), 1468 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1723 transitions. [2021-11-22 14:23:15,428 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1723 transitions. Word has length 61 [2021-11-22 14:23:15,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:23:15,429 INFO L470 AbstractCegarLoop]: Abstraction has 1469 states and 1723 transitions. [2021-11-22 14:23:15,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1723 transitions. [2021-11-22 14:23:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 14:23:15,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:23:15,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:23:15,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-22 14:23:15,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:23:15,631 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:23:15,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:23:15,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1137699215, now seen corresponding path program 1 times [2021-11-22 14:23:15,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:23:15,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379115142] [2021-11-22 14:23:15,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:23:15,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:23:15,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:23:15,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:23:15,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-22 14:23:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:23:15,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 14:23:15,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:23:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:15,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:23:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:16,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:23:16,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379115142] [2021-11-22 14:23:16,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379115142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:23:16,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:23:16,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-22 14:23:16,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481805292] [2021-11-22 14:23:16,083 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:23:16,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:23:16,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:23:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:23:16,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:23:16,084 INFO L87 Difference]: Start difference. First operand 1469 states and 1723 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:23:16,440 INFO L93 Difference]: Finished difference Result 3767 states and 4503 transitions. [2021-11-22 14:23:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:23:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-22 14:23:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:23:16,468 INFO L225 Difference]: With dead ends: 3767 [2021-11-22 14:23:16,469 INFO L226 Difference]: Without dead ends: 3767 [2021-11-22 14:23:16,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:23:16,470 INFO L933 BasicCegarLoop]: 3181 mSDtfsCounter, 2271 mSDsluCounter, 6274 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 9455 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:23:16,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 9455 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 14:23:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-22 14:23:16,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 1467. [2021-11-22 14:23:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 923 states have (on average 1.864572047670639) internal successors, (1721), 1466 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1721 transitions. [2021-11-22 14:23:16,517 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1721 transitions. Word has length 65 [2021-11-22 14:23:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:23:16,518 INFO L470 AbstractCegarLoop]: Abstraction has 1467 states and 1721 transitions. [2021-11-22 14:23:16,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1721 transitions. [2021-11-22 14:23:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 14:23:16,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:23:16,523 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] [2021-11-22 14:23:16,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-22 14:23:16,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:23:16,737 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:23:16,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:23:16,738 INFO L85 PathProgramCache]: Analyzing trace with hash -908599332, now seen corresponding path program 1 times [2021-11-22 14:23:16,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:23:16,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283854460] [2021-11-22 14:23:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:23:16,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:23:16,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:23:16,740 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:23:16,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-22 14:23:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:23:16,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 14:23:16,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:23:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:17,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:23:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:17,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:23:17,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283854460] [2021-11-22 14:23:17,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283854460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:23:17,384 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:23:17,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 14:23:17,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392959370] [2021-11-22 14:23:17,385 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:23:17,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:23:17,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:23:17,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:23:17,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:23:17,386 INFO L87 Difference]: Start difference. First operand 1467 states and 1721 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:17,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:23:17,578 INFO L93 Difference]: Finished difference Result 3767 states and 4473 transitions. [2021-11-22 14:23:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:23:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 14:23:17,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:23:17,594 INFO L225 Difference]: With dead ends: 3767 [2021-11-22 14:23:17,603 INFO L226 Difference]: Without dead ends: 3767 [2021-11-22 14:23:17,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:23:17,604 INFO L933 BasicCegarLoop]: 3150 mSDtfsCounter, 1957 mSDsluCounter, 4363 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 7513 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:23:17,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 7513 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:23:17,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-11-22 14:23:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 1723. [2021-11-22 14:23:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1179 states have (on average 1.852417302798982) internal successors, (2184), 1722 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 2184 transitions. [2021-11-22 14:23:17,653 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 2184 transitions. Word has length 66 [2021-11-22 14:23:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:23:17,654 INFO L470 AbstractCegarLoop]: Abstraction has 1723 states and 2184 transitions. [2021-11-22 14:23:17,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 2184 transitions. [2021-11-22 14:23:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:23:17,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:23:17,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:23:17,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-22 14:23:17,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:23:17,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:23:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:23:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1606232379, now seen corresponding path program 1 times [2021-11-22 14:23:17,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:23:17,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279491933] [2021-11-22 14:23:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:23:17,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:23:17,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:23:17,874 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:23:17,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-22 14:23:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:23:18,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 14:23:18,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:23:18,306 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 [2021-11-22 14:23:18,312 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 [2021-11-22 14:23:19,089 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 14:23:19,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-22 14:23:19,104 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 14:23:19,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-22 14:23:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:19,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:23:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:22,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:23:22,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279491933] [2021-11-22 14:23:22,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279491933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:23:22,367 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:23:22,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-22 14:23:22,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848135843] [2021-11-22 14:23:22,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:23:22,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 14:23:22,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:23:22,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 14:23:22,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:23:22,370 INFO L87 Difference]: Start difference. First operand 1723 states and 2184 transitions. Second operand has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:23:28,096 INFO L93 Difference]: Finished difference Result 2372 states and 2943 transitions. [2021-11-22 14:23:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:23:28,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-22 14:23:28,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:23:28,101 INFO L225 Difference]: With dead ends: 2372 [2021-11-22 14:23:28,101 INFO L226 Difference]: Without dead ends: 2372 [2021-11-22 14:23:28,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:23:28,102 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 4682 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1141 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:23:28,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4682 Valid, 1480 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1755 Invalid, 0 Unknown, 1141 Unchecked, 5.6s Time] [2021-11-22 14:23:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-11-22 14:23:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1684. [2021-11-22 14:23:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1179 states have (on average 1.79813401187447) internal successors, (2120), 1683 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2120 transitions. [2021-11-22 14:23:28,135 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2120 transitions. Word has length 68 [2021-11-22 14:23:28,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:23:28,135 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 2120 transitions. [2021-11-22 14:23:28,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:28,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2120 transitions. [2021-11-22 14:23:28,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 14:23:28,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:23:28,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:23:28,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-22 14:23:28,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:23:28,353 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:23:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:23:28,354 INFO L85 PathProgramCache]: Analyzing trace with hash -781624314, now seen corresponding path program 1 times [2021-11-22 14:23:28,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:23:28,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509784785] [2021-11-22 14:23:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:23:28,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:23:28,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:23:28,356 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:23:28,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-22 14:23:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:23:28,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 14:23:28,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:23:28,699 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 [2021-11-22 14:23:28,717 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 [2021-11-22 14:23:28,757 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 [2021-11-22 14:23:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:28,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:23:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:28,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:23:28,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509784785] [2021-11-22 14:23:28,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509784785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:23:28,926 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:23:28,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-22 14:23:28,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102427359] [2021-11-22 14:23:28,926 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:23:28,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:23:28,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:23:28,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:23:28,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:23:28,928 INFO L87 Difference]: Start difference. First operand 1684 states and 2120 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:23:35,825 INFO L93 Difference]: Finished difference Result 2602 states and 3187 transitions. [2021-11-22 14:23:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 14:23:35,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-22 14:23:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:23:35,831 INFO L225 Difference]: With dead ends: 2602 [2021-11-22 14:23:35,831 INFO L226 Difference]: Without dead ends: 2602 [2021-11-22 14:23:35,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-22 14:23:35,833 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 2196 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-22 14:23:35,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2196 Valid, 3926 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-22 14:23:35,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-22 14:23:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 1683. [2021-11-22 14:23:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1179 states have (on average 1.7972858354537744) internal successors, (2119), 1682 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2119 transitions. [2021-11-22 14:23:35,872 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2119 transitions. Word has length 74 [2021-11-22 14:23:35,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:23:35,873 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2119 transitions. [2021-11-22 14:23:35,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:23:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2119 transitions. [2021-11-22 14:23:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 14:23:35,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:23:35,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:23:35,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-22 14:23:36,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:23:36,091 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:23:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:23:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1539450402, now seen corresponding path program 1 times [2021-11-22 14:23:36,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:23:36,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914615318] [2021-11-22 14:23:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:23:36,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:23:36,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:23:36,094 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:23:36,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-22 14:23:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:23:36,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 14:23:36,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:23:36,482 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 [2021-11-22 14:23:36,523 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 [2021-11-22 14:23:36,531 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 [2021-11-22 14:23:36,590 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 [2021-11-22 14:23:36,593 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 [2021-11-22 14:23:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:36,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:23:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:23:37,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:23:37,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914615318] [2021-11-22 14:23:37,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914615318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:23:37,218 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:23:37,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-22 14:23:37,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099910844] [2021-11-22 14:23:37,219 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:23:37,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 14:23:37,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:23:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 14:23:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-22 14:23:37,220 INFO L87 Difference]: Start difference. First operand 1683 states and 2119 transitions. Second operand has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:24:09,283 INFO L93 Difference]: Finished difference Result 4379 states and 5380 transitions. [2021-11-22 14:24:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 14:24:09,285 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 14:24:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:24:09,293 INFO L225 Difference]: With dead ends: 4379 [2021-11-22 14:24:09,293 INFO L226 Difference]: Without dead ends: 4379 [2021-11-22 14:24:09,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2021-11-22 14:24:09,295 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 4417 mSDsluCounter, 6435 mSDsCounter, 0 mSdLazyCounter, 5350 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4417 SdHoareTripleChecker+Valid, 7211 SdHoareTripleChecker+Invalid, 5368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 5350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:24:09,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4417 Valid, 7211 Invalid, 5368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 5350 Invalid, 0 Unknown, 0 Unchecked, 31.3s Time] [2021-11-22 14:24:09,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2021-11-22 14:24:09,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 1682. [2021-11-22 14:24:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1179 states have (on average 1.7964376590330788) internal successors, (2118), 1681 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2118 transitions. [2021-11-22 14:24:09,340 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2118 transitions. Word has length 75 [2021-11-22 14:24:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:24:09,340 INFO L470 AbstractCegarLoop]: Abstraction has 1682 states and 2118 transitions. [2021-11-22 14:24:09,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2118 transitions. [2021-11-22 14:24:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 14:24:09,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:24:09,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:24:09,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-22 14:24:09,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:24:09,559 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:24:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:24:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash -730014349, now seen corresponding path program 1 times [2021-11-22 14:24:09,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:24:09,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610049963] [2021-11-22 14:24:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:24:09,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:24:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:24:09,563 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:24:09,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-22 14:24:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:24:09,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 14:24:09,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:24:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:10,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:24:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:10,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:24:10,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610049963] [2021-11-22 14:24:10,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610049963] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:24:10,127 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:24:10,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 14:24:10,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369969162] [2021-11-22 14:24:10,128 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:24:10,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:24:10,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:24:10,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:24:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:24:10,130 INFO L87 Difference]: Start difference. First operand 1682 states and 2118 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:24:10,273 INFO L93 Difference]: Finished difference Result 3194 states and 4023 transitions. [2021-11-22 14:24:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:24:10,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-22 14:24:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:24:10,281 INFO L225 Difference]: With dead ends: 3194 [2021-11-22 14:24:10,281 INFO L226 Difference]: Without dead ends: 3194 [2021-11-22 14:24:10,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:24:10,282 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 1200 mSDsluCounter, 4049 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 5540 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:24:10,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 5540 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:24:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2021-11-22 14:24:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 1685. [2021-11-22 14:24:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1182 states have (on average 1.7944162436548223) internal successors, (2121), 1684 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:10,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 2121 transitions. [2021-11-22 14:24:10,319 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 2121 transitions. Word has length 80 [2021-11-22 14:24:10,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:24:10,320 INFO L470 AbstractCegarLoop]: Abstraction has 1685 states and 2121 transitions. [2021-11-22 14:24:10,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:10,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 2121 transitions. [2021-11-22 14:24:10,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 14:24:10,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:24:10,322 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:24:10,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-22 14:24:10,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:24:10,537 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:24:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:24:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash 937545843, now seen corresponding path program 1 times [2021-11-22 14:24:10,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:24:10,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559818534] [2021-11-22 14:24:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:24:10,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:24:10,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:24:10,541 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:24:10,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-22 14:24:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:24:10,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 14:24:10,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:24:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:11,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:24:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:11,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:24:11,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559818534] [2021-11-22 14:24:11,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559818534] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:24:11,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:24:11,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-22 14:24:11,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640692434] [2021-11-22 14:24:11,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:24:11,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:24:11,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:24:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:24:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:24:11,239 INFO L87 Difference]: Start difference. First operand 1685 states and 2121 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:11,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:24:11,911 INFO L93 Difference]: Finished difference Result 2743 states and 3390 transitions. [2021-11-22 14:24:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 14:24:11,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-22 14:24:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:24:11,916 INFO L225 Difference]: With dead ends: 2743 [2021-11-22 14:24:11,917 INFO L226 Difference]: Without dead ends: 2743 [2021-11-22 14:24:11,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-22 14:24:11,918 INFO L933 BasicCegarLoop]: 1276 mSDtfsCounter, 985 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 8699 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:24:11,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 8699 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 14:24:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2743 states. [2021-11-22 14:24:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2743 to 1691. [2021-11-22 14:24:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1188 states have (on average 1.7904040404040404) internal successors, (2127), 1690 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2127 transitions. [2021-11-22 14:24:11,950 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2127 transitions. Word has length 82 [2021-11-22 14:24:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:24:11,951 INFO L470 AbstractCegarLoop]: Abstraction has 1691 states and 2127 transitions. [2021-11-22 14:24:11,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2127 transitions. [2021-11-22 14:24:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 14:24:11,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:24:11,953 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:24:11,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-22 14:24:12,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:24:12,169 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:24:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:24:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash -947292557, now seen corresponding path program 2 times [2021-11-22 14:24:12,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:24:12,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036475097] [2021-11-22 14:24:12,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 14:24:12,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:24:12,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:24:12,171 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:24:12,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-22 14:24:12,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 14:24:12,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:24:12,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 14:24:12,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:24:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:12,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:24:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:13,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:24:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036475097] [2021-11-22 14:24:13,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036475097] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:24:13,399 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:24:13,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-22 14:24:13,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551025736] [2021-11-22 14:24:13,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:24:13,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 14:24:13,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:24:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 14:24:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-22 14:24:13,401 INFO L87 Difference]: Start difference. First operand 1691 states and 2127 transitions. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:17,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:24:17,191 INFO L93 Difference]: Finished difference Result 9352 states and 11834 transitions. [2021-11-22 14:24:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-22 14:24:17,192 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-22 14:24:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:24:17,201 INFO L225 Difference]: With dead ends: 9352 [2021-11-22 14:24:17,201 INFO L226 Difference]: Without dead ends: 9352 [2021-11-22 14:24:17,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=442, Invalid=964, Unknown=0, NotChecked=0, Total=1406 [2021-11-22 14:24:17,202 INFO L933 BasicCegarLoop]: 5816 mSDtfsCounter, 14253 mSDsluCounter, 39471 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14253 SdHoareTripleChecker+Valid, 45287 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:24:17,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14253 Valid, 45287 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 14:24:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2021-11-22 14:24:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 1717. [2021-11-22 14:24:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1214 states have (on average 1.7858319604612851) internal successors, (2168), 1716 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2168 transitions. [2021-11-22 14:24:17,273 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2168 transitions. Word has length 86 [2021-11-22 14:24:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:24:17,274 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 2168 transitions. [2021-11-22 14:24:17,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2168 transitions. [2021-11-22 14:24:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-22 14:24:17,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:24:17,276 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:24:17,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-22 14:24:17,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:24:17,489 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:24:17,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:24:17,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1483750797, now seen corresponding path program 3 times [2021-11-22 14:24:17,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:24:17,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682839266] [2021-11-22 14:24:17,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 14:24:17,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:24:17,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:24:17,492 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:24:17,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-22 14:24:18,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-22 14:24:18,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:24:18,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 14:24:18,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:24:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:19,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:24:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:20,503 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:24:20,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682839266] [2021-11-22 14:24:20,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682839266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:24:20,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:24:20,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-22 14:24:20,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729563335] [2021-11-22 14:24:20,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:24:20,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-22 14:24:20,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:24:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-22 14:24:20,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 14:24:20,506 INFO L87 Difference]: Start difference. First operand 1717 states and 2168 transitions. Second operand has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:24:35,569 INFO L93 Difference]: Finished difference Result 20249 states and 25755 transitions. [2021-11-22 14:24:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-22 14:24:35,571 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-22 14:24:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:24:35,595 INFO L225 Difference]: With dead ends: 20249 [2021-11-22 14:24:35,595 INFO L226 Difference]: Without dead ends: 20249 [2021-11-22 14:24:35,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1644, Invalid=4208, Unknown=0, NotChecked=0, Total=5852 [2021-11-22 14:24:35,598 INFO L933 BasicCegarLoop]: 13789 mSDtfsCounter, 38533 mSDsluCounter, 192853 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38533 SdHoareTripleChecker+Valid, 206642 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:24:35,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38533 Valid, 206642 Invalid, 1737 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [169 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-11-22 14:24:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20249 states. [2021-11-22 14:24:35,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20249 to 1757. [2021-11-22 14:24:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1254 states have (on average 1.777511961722488) internal successors, (2229), 1756 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2229 transitions. [2021-11-22 14:24:35,814 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2229 transitions. Word has length 94 [2021-11-22 14:24:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:24:35,815 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 2229 transitions. [2021-11-22 14:24:35,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.2941176470588234) internal successors, (112), 34 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:24:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2229 transitions. [2021-11-22 14:24:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 14:24:35,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:24:35,820 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:24:35,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-22 14:24:36,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:24:36,047 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:24:36,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:24:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash -193439117, now seen corresponding path program 4 times [2021-11-22 14:24:36,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:24:36,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507840306] [2021-11-22 14:24:36,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-22 14:24:36,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:24:36,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:24:36,073 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:24:36,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-22 14:24:36,507 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-22 14:24:36,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:24:36,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 14:24:36,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:24:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:37,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:24:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:24:40,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:24:40,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507840306] [2021-11-22 14:24:40,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507840306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:24:40,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 14:24:40,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-22 14:24:40,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141303221] [2021-11-22 14:24:40,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 14:24:40,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-22 14:24:40,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:24:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-22 14:24:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-22 14:24:40,633 INFO L87 Difference]: Start difference. First operand 1757 states and 2229 transitions. Second operand has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:26:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:26:13,784 INFO L93 Difference]: Finished difference Result 2839 states and 3512 transitions. [2021-11-22 14:26:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-22 14:26:13,785 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-22 14:26:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:26:13,788 INFO L225 Difference]: With dead ends: 2839 [2021-11-22 14:26:13,788 INFO L226 Difference]: Without dead ends: 2839 [2021-11-22 14:26:13,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3304 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=3577, Invalid=8413, Unknown=0, NotChecked=0, Total=11990 [2021-11-22 14:26:13,792 INFO L933 BasicCegarLoop]: 1276 mSDtfsCounter, 985 mSDsluCounter, 41659 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 42935 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.4s IncrementalHoareTripleChecker+Time [2021-11-22 14:26:13,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 42935 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 64.4s Time] [2021-11-22 14:26:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2021-11-22 14:26:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 1787. [2021-11-22 14:26:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1284 states have (on average 1.7515576323987538) internal successors, (2249), 1786 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:26:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2249 transitions. [2021-11-22 14:26:13,826 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2249 transitions. Word has length 110 [2021-11-22 14:26:13,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:26:13,826 INFO L470 AbstractCegarLoop]: Abstraction has 1787 states and 2249 transitions. [2021-11-22 14:26:13,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.1818181818181817) internal successors, (144), 66 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:26:13,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2249 transitions. [2021-11-22 14:26:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 14:26:13,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:26:13,828 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:26:13,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-22 14:26:14,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:26:14,057 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 673 more)] === [2021-11-22 14:26:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:26:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash -684949645, now seen corresponding path program 5 times [2021-11-22 14:26:14,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:26:14,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789348317] [2021-11-22 14:26:14,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-22 14:26:14,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:26:14,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:26:14,060 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:26:14,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8778f840-7bb3-4747-8c6b-45f019cc138a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-22 14:26:15,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-22 14:26:15,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 14:26:15,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-22 14:26:15,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:26:15,301 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 [2021-11-22 14:26:15,585 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 14:26:15,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-22 14:26:15,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-22 14:26:16,031 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-22 14:26:16,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 38 [2021-11-22 14:26:17,485 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:17,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:18,637 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:18,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 53 [2021-11-22 14:26:18,774 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:18,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:23,050 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-11-22 14:26:23,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 57 [2021-11-22 14:26:23,263 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:23,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:23,428 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:23,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:24,309 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:24,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:25,576 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:25,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:25,737 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:25,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:25,880 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:25,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:26,039 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:26,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:29,501 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:29,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:29,677 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:29,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:29,827 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:29,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:30,617 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:30,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:30,762 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:30,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:30,961 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:30,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:32,505 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:32,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:35,910 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:35,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:36,086 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:36,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:36,233 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:36,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:37,943 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:37,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:38,078 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:38,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:38,227 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:38,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:42,912 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:42,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:44,209 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:44,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:44,352 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:44,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:45,898 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:45,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:46,068 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:46,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:46,210 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:46,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:46,365 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:46,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:48,599 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:48,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:50,256 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:50,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:54,938 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-11-22 14:26:54,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 55 [2021-11-22 14:26:56,489 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:56,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:26:59,379 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:59,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 52 [2021-11-22 14:26:59,539 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:26:59,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:27:00,753 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:27:00,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 53 [2021-11-22 14:27:02,856 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:27:02,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:27:05,087 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:27:05,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:27:05,215 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:27:05,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 53 [2021-11-22 14:27:05,342 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:27:05,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 51 [2021-11-22 14:27:05,482 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-22 14:27:05,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 51 [2021-11-22 14:27:05,791 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-22 14:27:05,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 56 [2021-11-22 14:27:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 43 proven. 44 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2021-11-22 14:27:05,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:27:07,933 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr316#1| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr316#1| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))))))) (_ bv1 1)))) is different from false