./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa --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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:38:14,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:38:14,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:38:14,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:38:14,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:38:14,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:38:14,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:38:14,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:38:14,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:38:14,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:38:14,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:38:14,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:38:14,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:38:14,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:38:14,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:38:14,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:38:14,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:38:14,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:38:14,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:38:14,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:38:14,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:38:14,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:38:14,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:38:14,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:38:14,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:38:14,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:38:14,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:38:14,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:38:14,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:38:14,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:38:14,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:38:14,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:38:14,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:38:14,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:38:14,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:38:14,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:38:14,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:38:14,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:38:14,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:38:14,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:38:14,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:38:14,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-07 00:38:14,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:38:14,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:38:14,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:38:14,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:38:14,616 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:38:14,616 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:38:14,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:38:14,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:38:14,617 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:38:14,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:38:14,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:38:14,618 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:38:14,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:38:14,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:38:14,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:38:14,618 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-07 00:38:14,618 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-07 00:38:14,619 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-07 00:38:14,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:38:14,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:38:14,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:38:14,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:38:14,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:38:14,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:38:14,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:38:14,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:38:14,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:38:14,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:38:14,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:38:14,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:38:14,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:38:14,621 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_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2021-12-07 00:38:14,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:38:14,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:38:14,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:38:14,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:38:14,821 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:38:14,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-12-07 00:38:14,862 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/1b41ffa7b/089ec125e0d84295840ef4bb0f1b6e68/FLAG09e84cc0b [2021-12-07 00:38:15,316 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:38:15,316 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-12-07 00:38:15,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/1b41ffa7b/089ec125e0d84295840ef4bb0f1b6e68/FLAG09e84cc0b [2021-12-07 00:38:15,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/1b41ffa7b/089ec125e0d84295840ef4bb0f1b6e68 [2021-12-07 00:38:15,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:38:15,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:38:15,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:38:15,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:38:15,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:38:15,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:38:15" (1/1) ... [2021-12-07 00:38:15,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622ba42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:15, skipping insertion in model container [2021-12-07 00:38:15,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:38:15" (1/1) ... [2021-12-07 00:38:15,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:38:15,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:38:16,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:38:16,135 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) [2021-12-07 00:38:16,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c524f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:16, skipping insertion in model container [2021-12-07 00:38:16,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:38:16,136 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-07 00:38:16,138 INFO L158 Benchmark]: Toolchain (without parser) took 284.18ms. Allocated memory is still 104.9MB. Free memory was 80.5MB in the beginning and 67.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 00:38:16,138 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 00:38:16,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.52ms. Allocated memory is still 104.9MB. Free memory was 80.3MB in the beginning and 67.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 00:38:16,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.52ms. Allocated memory is still 104.9MB. Free memory was 80.3MB in the beginning and 67.1MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa --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 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:38:17,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:38:17,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:38:17,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:38:17,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:38:17,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:38:17,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:38:17,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:38:17,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:38:17,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:38:17,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:38:17,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:38:17,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:38:17,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:38:17,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:38:17,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:38:17,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:38:17,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:38:17,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:38:17,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:38:17,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:38:17,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:38:17,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:38:17,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:38:17,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:38:17,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:38:17,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:38:17,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:38:17,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:38:17,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:38:17,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:38:17,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:38:17,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:38:17,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:38:17,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:38:17,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:38:17,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:38:17,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:38:17,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:38:17,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:38:17,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:38:17,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-07 00:38:17,595 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:38:17,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:38:17,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:38:17,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:38:17,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:38:17,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:38:17,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:38:17,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:38:17,598 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:38:17,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:38:17,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:38:17,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:38:17,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:38:17,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:38:17,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:38:17,599 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-07 00:38:17,599 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-07 00:38:17,600 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-07 00:38:17,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:38:17,600 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-07 00:38:17,600 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-07 00:38:17,600 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-07 00:38:17,600 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:38:17,601 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:38:17,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:38:17,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:38:17,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:38:17,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:38:17,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:38:17,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:38:17,602 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-07 00:38:17,602 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-07 00:38:17,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:38:17,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-07 00:38:17,602 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_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 143a30a80a62e6cad7506820b1f96be933051e37975b620c656decb608437802 [2021-12-07 00:38:17,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:38:17,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:38:17,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:38:17,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:38:17,852 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:38:17,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-12-07 00:38:17,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/083c44826/2c747fb43c614be8a8b3c29a77686b1d/FLAG1b802665f [2021-12-07 00:38:18,341 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:38:18,341 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-1.i [2021-12-07 00:38:18,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/083c44826/2c747fb43c614be8a8b3c29a77686b1d/FLAG1b802665f [2021-12-07 00:38:18,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/data/083c44826/2c747fb43c614be8a8b3c29a77686b1d [2021-12-07 00:38:18,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:38:18,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:38:18,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:38:18,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:38:18,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:38:18,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7395dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18, skipping insertion in model container [2021-12-07 00:38:18,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:38:18,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:38:18,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:38:18,686 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-07 00:38:18,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:38:18,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:38:18,732 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:38:18,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:38:18,803 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:38:18,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18 WrapperNode [2021-12-07 00:38:18,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:38:18,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:38:18,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:38:18,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:38:18,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,843 INFO L137 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 86 [2021-12-07 00:38:18,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:38:18,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:38:18,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:38:18,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:38:18,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:38:18,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:38:18,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:38:18,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:38:18,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (1/1) ... [2021-12-07 00:38:18,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:38:18,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:18,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:38:18,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:38:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-07 00:38:18,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-07 00:38:18,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:38:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:38:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:38:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:38:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:38:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 00:38:18,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:38:18,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:38:19,018 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:38:19,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:38:19,254 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:38:19,261 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:38:19,261 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-07 00:38:19,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:38:19 BoogieIcfgContainer [2021-12-07 00:38:19,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:38:19,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:38:19,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:38:19,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:38:19,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:38:18" (1/3) ... [2021-12-07 00:38:19,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ce1cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:38:19, skipping insertion in model container [2021-12-07 00:38:19,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:38:18" (2/3) ... [2021-12-07 00:38:19,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ce1cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:38:19, skipping insertion in model container [2021-12-07 00:38:19,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:38:19" (3/3) ... [2021-12-07 00:38:19,270 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-1.i [2021-12-07 00:38:19,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:38:19,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-12-07 00:38:19,320 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:38:19,327 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 [2021-12-07 00:38:19,327 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-12-07 00:38:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 38 states have (on average 1.763157894736842) internal successors, (67), 56 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:38:19,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:19,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:19,351 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1738627285, now seen corresponding path program 1 times [2021-12-07 00:38:19,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:19,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22117858] [2021-12-07 00:38:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:19,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:19,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:19,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:19,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-07 00:38:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:19,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:38:19,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:19,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:19,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:19,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22117858] [2021-12-07 00:38:19,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22117858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:19,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:19,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:38:19,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807290291] [2021-12-07 00:38:19,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:19,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:38:19,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:38:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:19,511 INFO L87 Difference]: Start difference. First operand has 60 states, 38 states have (on average 1.763157894736842) internal successors, (67), 56 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:19,623 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2021-12-07 00:38:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:38:19,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-07 00:38:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:19,631 INFO L225 Difference]: With dead ends: 114 [2021-12-07 00:38:19,631 INFO L226 Difference]: Without dead ends: 110 [2021-12-07 00:38:19,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:19,635 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 55 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:19,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 234 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:38:19,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-07 00:38:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 62. [2021-12-07 00:38:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.6) internal successors, (64), 57 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:38:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-12-07 00:38:19,671 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 11 [2021-12-07 00:38:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:19,672 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-12-07 00:38:19,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-12-07 00:38:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:38:19,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:19,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:19,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:19,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:19,875 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:19,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:19,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1738628211, now seen corresponding path program 1 times [2021-12-07 00:38:19,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:19,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993281454] [2021-12-07 00:38:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:19,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:19,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:19,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:19,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-07 00:38:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:20,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:38:20,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:20,073 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 [2021-12-07 00:38:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:20,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:20,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:20,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993281454] [2021-12-07 00:38:20,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993281454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:20,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:20,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:38:20,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827374664] [2021-12-07 00:38:20,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:20,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:38:20,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:38:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:20,110 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:20,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:20,266 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2021-12-07 00:38:20,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:38:20,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-07 00:38:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:20,268 INFO L225 Difference]: With dead ends: 97 [2021-12-07 00:38:20,268 INFO L226 Difference]: Without dead ends: 97 [2021-12-07 00:38:20,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:20,270 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 35 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:20,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 158 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:38:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-07 00:38:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 75. [2021-12-07 00:38:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 70 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:38:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2021-12-07 00:38:20,278 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 11 [2021-12-07 00:38:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:20,278 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2021-12-07 00:38:20,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2021-12-07 00:38:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:38:20,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:20,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:20,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-07 00:38:20,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:20,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:20,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1738628210, now seen corresponding path program 1 times [2021-12-07 00:38:20,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:20,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326408677] [2021-12-07 00:38:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:20,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:20,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:20,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:20,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-07 00:38:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:20,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:38:20,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:20,662 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 [2021-12-07 00:38:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:20,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:20,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326408677] [2021-12-07 00:38:20,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326408677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:20,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:20,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:38:20,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809422083] [2021-12-07 00:38:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:20,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:38:20,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:20,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:38:20,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:38:20,759 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:21,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:21,049 INFO L93 Difference]: Finished difference Result 127 states and 150 transitions. [2021-12-07 00:38:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:38:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-07 00:38:21,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:21,050 INFO L225 Difference]: With dead ends: 127 [2021-12-07 00:38:21,051 INFO L226 Difference]: Without dead ends: 127 [2021-12-07 00:38:21,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:38:21,052 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 109 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:21,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 371 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:38:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-07 00:38:21,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 105. [2021-12-07 00:38:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.5783132530120483) internal successors, (131), 100 states have internal predecessors, (131), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:38:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2021-12-07 00:38:21,061 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 11 [2021-12-07 00:38:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:21,062 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2021-12-07 00:38:21,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2021-12-07 00:38:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:38:21,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:21,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:21,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:21,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:21,264 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -851123604, now seen corresponding path program 1 times [2021-12-07 00:38:21,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:21,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951741906] [2021-12-07 00:38:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:21,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:21,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:21,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:21,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-07 00:38:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:21,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:38:21,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:21,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:21,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:21,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951741906] [2021-12-07 00:38:21,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951741906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:21,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:21,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:38:21,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616438641] [2021-12-07 00:38:21,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:21,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:38:21,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:21,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:38:21,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:38:21,439 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:21,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:21,537 INFO L93 Difference]: Finished difference Result 148 states and 185 transitions. [2021-12-07 00:38:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:38:21,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-07 00:38:21,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:21,539 INFO L225 Difference]: With dead ends: 148 [2021-12-07 00:38:21,539 INFO L226 Difference]: Without dead ends: 146 [2021-12-07 00:38:21,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:38:21,540 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:21,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 162 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:38:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-07 00:38:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 105. [2021-12-07 00:38:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.5662650602409638) internal successors, (130), 100 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:38:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2021-12-07 00:38:21,548 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 11 [2021-12-07 00:38:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:21,549 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2021-12-07 00:38:21,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2021-12-07 00:38:21,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:38:21,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:21,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:21,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:21,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:21,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash -851124530, now seen corresponding path program 1 times [2021-12-07 00:38:21,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:21,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346612912] [2021-12-07 00:38:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:21,755 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:21,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:21,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-07 00:38:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:21,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:38:21,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:21,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:21,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:21,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346612912] [2021-12-07 00:38:21,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346612912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:21,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:21,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:38:21,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910185839] [2021-12-07 00:38:21,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:21,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:38:21,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:21,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:38:21,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:21,936 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:21,963 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2021-12-07 00:38:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:38:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-07 00:38:21,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:21,964 INFO L225 Difference]: With dead ends: 89 [2021-12-07 00:38:21,964 INFO L226 Difference]: Without dead ends: 87 [2021-12-07 00:38:21,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:21,965 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:21,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:38:21,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-07 00:38:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-12-07 00:38:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 66 states have (on average 1.5757575757575757) internal successors, (104), 83 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2021-12-07 00:38:21,971 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 11 [2021-12-07 00:38:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:21,971 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-12-07 00:38:21,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2021-12-07 00:38:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-07 00:38:21,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:21,971 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:21,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-07 00:38:22,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:22,173 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:22,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:22,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1832553715, now seen corresponding path program 1 times [2021-12-07 00:38:22,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:22,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591892927] [2021-12-07 00:38:22,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:22,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:22,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:22,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:22,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-07 00:38:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:22,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:38:22,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:22,287 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 [2021-12-07 00:38:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:22,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:23,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:23,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591892927] [2021-12-07 00:38:23,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591892927] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:23,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:23,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-07 00:38:23,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755178724] [2021-12-07 00:38:23,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:23,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:38:23,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:23,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:38:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:38:23,094 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:23,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:23,958 INFO L93 Difference]: Finished difference Result 204 states and 233 transitions. [2021-12-07 00:38:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:38:23,959 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-12-07 00:38:23,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:23,961 INFO L225 Difference]: With dead ends: 204 [2021-12-07 00:38:23,961 INFO L226 Difference]: Without dead ends: 204 [2021-12-07 00:38:23,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:38:23,962 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 429 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:23,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 433 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 256 Invalid, 0 Unknown, 99 Unchecked, 0.6s Time] [2021-12-07 00:38:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-07 00:38:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 96. [2021-12-07 00:38:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.5333333333333334) internal successors, (115), 92 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2021-12-07 00:38:23,972 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 14 [2021-12-07 00:38:23,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:23,972 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2021-12-07 00:38:23,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2021-12-07 00:38:23,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-07 00:38:23,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:23,976 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:23,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-07 00:38:24,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:24,178 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:24,180 INFO L85 PathProgramCache]: Analyzing trace with hash -68910454, now seen corresponding path program 1 times [2021-12-07 00:38:24,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:24,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366470242] [2021-12-07 00:38:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:24,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:24,184 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:24,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-07 00:38:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:38:24,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:24,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:24,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:24,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366470242] [2021-12-07 00:38:24,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366470242] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:24,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:24,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-07 00:38:24,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62144853] [2021-12-07 00:38:24,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:24,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:38:24,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:24,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:38:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:38:24,406 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:24,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:24,529 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2021-12-07 00:38:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:38:24,530 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-12-07 00:38:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:24,530 INFO L225 Difference]: With dead ends: 102 [2021-12-07 00:38:24,530 INFO L226 Difference]: Without dead ends: 102 [2021-12-07 00:38:24,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:38:24,531 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 143 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:24,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 219 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:38:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-07 00:38:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-12-07 00:38:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.4875) internal successors, (119), 97 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2021-12-07 00:38:24,536 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 21 [2021-12-07 00:38:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:24,536 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2021-12-07 00:38:24,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2021-12-07 00:38:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-07 00:38:24,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:24,537 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:24,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-07 00:38:24,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:24,739 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1435873458, now seen corresponding path program 2 times [2021-12-07 00:38:24,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:24,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961558442] [2021-12-07 00:38:24,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:38:24,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:24,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:24,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:24,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-07 00:38:24,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:38:24,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:24,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 00:38:24,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:24,884 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 [2021-12-07 00:38:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:25,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:26,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:26,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961558442] [2021-12-07 00:38:26,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961558442] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:26,795 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:26,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-12-07 00:38:26,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426045607] [2021-12-07 00:38:26,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:26,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 00:38:26,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 00:38:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:38:26,797 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:29,707 INFO L93 Difference]: Finished difference Result 132 states and 149 transitions. [2021-12-07 00:38:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-07 00:38:29,708 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-12-07 00:38:29,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:29,709 INFO L225 Difference]: With dead ends: 132 [2021-12-07 00:38:29,709 INFO L226 Difference]: Without dead ends: 132 [2021-12-07 00:38:29,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2021-12-07 00:38:29,710 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 471 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:29,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 628 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 480 Invalid, 0 Unknown, 91 Unchecked, 1.2s Time] [2021-12-07 00:38:29,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-07 00:38:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2021-12-07 00:38:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 110 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2021-12-07 00:38:29,715 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 23 [2021-12-07 00:38:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:29,715 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2021-12-07 00:38:29,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:29,716 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2021-12-07 00:38:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:38:29,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:29,716 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:29,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-07 00:38:29,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:29,918 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:29,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1424196022, now seen corresponding path program 2 times [2021-12-07 00:38:29,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:29,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032477107] [2021-12-07 00:38:29,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:38:29,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:29,924 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:29,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-07 00:38:30,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:38:30,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:30,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:38:30,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:30,024 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 [2021-12-07 00:38:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-07 00:38:30,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:30,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:30,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032477107] [2021-12-07 00:38:30,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032477107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:30,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:30,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:38:30,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984371893] [2021-12-07 00:38:30,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:30,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:38:30,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:30,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:38:30,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:38:30,089 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:30,284 INFO L93 Difference]: Finished difference Result 156 states and 185 transitions. [2021-12-07 00:38:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:38:30,285 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-12-07 00:38:30,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:30,286 INFO L225 Difference]: With dead ends: 156 [2021-12-07 00:38:30,286 INFO L226 Difference]: Without dead ends: 156 [2021-12-07 00:38:30,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:38:30,286 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 82 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:30,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 196 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:38:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-07 00:38:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 118. [2021-12-07 00:38:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 114 states have internal predecessors, (142), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2021-12-07 00:38:30,291 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 33 [2021-12-07 00:38:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:30,292 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2021-12-07 00:38:30,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2021-12-07 00:38:30,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-07 00:38:30,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:30,293 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:30,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-07 00:38:30,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:30,494 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1424196021, now seen corresponding path program 1 times [2021-12-07 00:38:30,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:30,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252817358] [2021-12-07 00:38:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:30,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:30,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:30,500 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:30,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-07 00:38:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:30,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:38:30,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:30,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:30,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:30,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252817358] [2021-12-07 00:38:30,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252817358] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:30,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:30,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-12-07 00:38:30,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524304430] [2021-12-07 00:38:30,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:30,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-07 00:38:30,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-07 00:38:30,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:38:30,990 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:31,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:31,256 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2021-12-07 00:38:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:38:31,256 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-07 00:38:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:31,257 INFO L225 Difference]: With dead ends: 118 [2021-12-07 00:38:31,257 INFO L226 Difference]: Without dead ends: 118 [2021-12-07 00:38:31,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:38:31,258 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 93 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:31,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 538 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:38:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-07 00:38:31,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-12-07 00:38:31,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 97 states have (on average 1.422680412371134) internal successors, (138), 114 states have internal predecessors, (138), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 143 transitions. [2021-12-07 00:38:31,261 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 143 transitions. Word has length 33 [2021-12-07 00:38:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:31,262 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 143 transitions. [2021-12-07 00:38:31,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:31,262 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 143 transitions. [2021-12-07 00:38:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-07 00:38:31,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:31,263 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:31,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-07 00:38:31,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:31,466 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2030306542, now seen corresponding path program 3 times [2021-12-07 00:38:31,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:31,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249376041] [2021-12-07 00:38:31,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:38:31,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:31,471 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:31,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-07 00:38:31,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-07 00:38:31,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:31,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-07 00:38:31,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:31,677 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 [2021-12-07 00:38:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:32,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:39,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249376041] [2021-12-07 00:38:39,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249376041] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:39,062 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:39,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2021-12-07 00:38:39,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813517284] [2021-12-07 00:38:39,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:39,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-07 00:38:39,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:39,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-07 00:38:39,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2021-12-07 00:38:39,063 INFO L87 Difference]: Start difference. First operand 118 states and 143 transitions. Second operand has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:44,380 INFO L93 Difference]: Finished difference Result 180 states and 202 transitions. [2021-12-07 00:38:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:38:44,381 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2021-12-07 00:38:44,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:44,382 INFO L225 Difference]: With dead ends: 180 [2021-12-07 00:38:44,382 INFO L226 Difference]: Without dead ends: 180 [2021-12-07 00:38:44,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=316, Invalid=1090, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 00:38:44,383 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 1116 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:44,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 990 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 938 Invalid, 0 Unknown, 119 Unchecked, 3.0s Time] [2021-12-07 00:38:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-12-07 00:38:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 116. [2021-12-07 00:38:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 96 states have (on average 1.40625) internal successors, (135), 112 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2021-12-07 00:38:44,387 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 41 [2021-12-07 00:38:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:44,387 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2021-12-07 00:38:44,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2021-12-07 00:38:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-07 00:38:44,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:44,388 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:44,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:44,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:44,589 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:44,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1720133109, now seen corresponding path program 2 times [2021-12-07 00:38:44,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:44,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146110820] [2021-12-07 00:38:44,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:38:44,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:44,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:44,595 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:44,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-07 00:38:44,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:38:44,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:44,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:38:44,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:44,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:44,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:44,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146110820] [2021-12-07 00:38:44,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146110820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:44,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:44,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:38:44,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845259671] [2021-12-07 00:38:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:44,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:38:44,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:44,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:38:44,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:38:44,727 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:44,772 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2021-12-07 00:38:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:38:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-07 00:38:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:44,774 INFO L225 Difference]: With dead ends: 132 [2021-12-07 00:38:44,774 INFO L226 Difference]: Without dead ends: 132 [2021-12-07 00:38:44,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:44,774 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 132 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:44,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 113 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:38:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-07 00:38:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 90. [2021-12-07 00:38:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 86 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2021-12-07 00:38:44,777 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 45 [2021-12-07 00:38:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:44,778 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2021-12-07 00:38:44,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 00:38:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2021-12-07 00:38:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-07 00:38:44,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:44,779 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:44,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-07 00:38:44,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:44,980 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:44,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1217377455, now seen corresponding path program 1 times [2021-12-07 00:38:44,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:44,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137343645] [2021-12-07 00:38:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:44,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:44,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:44,986 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:44,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-07 00:38:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:45,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:38:45,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:45,109 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 [2021-12-07 00:38:45,239 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-07 00:38:45,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2021-12-07 00:38:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:45,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:45,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:45,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137343645] [2021-12-07 00:38:45,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137343645] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:45,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:45,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-12-07 00:38:45,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71654122] [2021-12-07 00:38:45,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:45,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:38:45,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:45,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:38:45,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:38:45,456 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:45,722 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2021-12-07 00:38:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:38:45,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2021-12-07 00:38:45,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:45,724 INFO L225 Difference]: With dead ends: 149 [2021-12-07 00:38:45,724 INFO L226 Difference]: Without dead ends: 149 [2021-12-07 00:38:45,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:38:45,724 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 71 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:45,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 418 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2021-12-07 00:38:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-07 00:38:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 103. [2021-12-07 00:38:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 83 states have (on average 1.3373493975903614) internal successors, (111), 98 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-07 00:38:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-12-07 00:38:45,728 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 50 [2021-12-07 00:38:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:45,728 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-12-07 00:38:45,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-12-07 00:38:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-07 00:38:45,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:45,729 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:45,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:45,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:45,930 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:45,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:45,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1217377454, now seen corresponding path program 1 times [2021-12-07 00:38:45,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550092320] [2021-12-07 00:38:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:45,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:45,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:45,936 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:45,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-07 00:38:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:46,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 00:38:46,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:46,099 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 [2021-12-07 00:38:46,104 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 [2021-12-07 00:38:48,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:48,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-07 00:38:48,496 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 00:38:48,497 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 [2021-12-07 00:38:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:48,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:48,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550092320] [2021-12-07 00:38:48,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550092320] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [347275510] [2021-12-07 00:38:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:48,965 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-07 00:38:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-07 00:38:48,966 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-07 00:38:48,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-12-07 00:38:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:49,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 00:38:49,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:49,279 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 [2021-12-07 00:38:49,285 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 [2021-12-07 00:38:49,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:49,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-07 00:38:49,581 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-07 00:38:49,581 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 22 treesize of output 22 [2021-12-07 00:38:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:49,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:49,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [347275510] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:49,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:49,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-12-07 00:38:49,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590395217] [2021-12-07 00:38:49,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:49,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:38:49,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:49,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:38:49,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=128, Unknown=1, NotChecked=0, Total=156 [2021-12-07 00:38:49,917 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:50,484 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2021-12-07 00:38:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:38:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-12-07 00:38:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:50,486 INFO L225 Difference]: With dead ends: 195 [2021-12-07 00:38:50,486 INFO L226 Difference]: Without dead ends: 195 [2021-12-07 00:38:50,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=43, Invalid=196, Unknown=1, NotChecked=0, Total=240 [2021-12-07 00:38:50,487 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 130 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:50,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 520 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 374 Invalid, 0 Unknown, 53 Unchecked, 0.5s Time] [2021-12-07 00:38:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-07 00:38:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 110. [2021-12-07 00:38:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 103 states have internal predecessors, (118), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-07 00:38:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2021-12-07 00:38:50,491 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 50 [2021-12-07 00:38:50,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:50,491 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2021-12-07 00:38:50,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:50,491 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2021-12-07 00:38:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-07 00:38:50,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:50,492 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:50,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-07 00:38:50,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-12-07 00:38:50,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-07 00:38:50,894 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1668680547, now seen corresponding path program 1 times [2021-12-07 00:38:50,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:50,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497469697] [2021-12-07 00:38:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:50,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:50,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:50,898 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:50,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-07 00:38:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:38:51,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-07 00:38:51,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:51,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:51,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497469697] [2021-12-07 00:38:51,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497469697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:51,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:51,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:38:51,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040449657] [2021-12-07 00:38:51,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:51,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:38:51,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:38:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:51,053 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 00:38:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:51,085 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2021-12-07 00:38:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:38:51,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2021-12-07 00:38:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:51,086 INFO L225 Difference]: With dead ends: 156 [2021-12-07 00:38:51,086 INFO L226 Difference]: Without dead ends: 156 [2021-12-07 00:38:51,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:38:51,087 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:51,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 237 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:38:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-07 00:38:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 112. [2021-12-07 00:38:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 104 states have internal predecessors, (119), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-07 00:38:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2021-12-07 00:38:51,090 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 52 [2021-12-07 00:38:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:51,090 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2021-12-07 00:38:51,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 00:38:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2021-12-07 00:38:51,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-07 00:38:51,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:51,091 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:51,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-07 00:38:51,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:51,292 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:51,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 74129788, now seen corresponding path program 1 times [2021-12-07 00:38:51,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791410655] [2021-12-07 00:38:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:51,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:51,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:51,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:51,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-07 00:38:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:51,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:38:51,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-07 00:38:51,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:51,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:51,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791410655] [2021-12-07 00:38:51,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791410655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:51,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:38:51,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:38:51,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919888391] [2021-12-07 00:38:51,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:51,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:38:51,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:38:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:38:51,454 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:51,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:51,503 INFO L93 Difference]: Finished difference Result 144 states and 164 transitions. [2021-12-07 00:38:51,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:38:51,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-12-07 00:38:51,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:51,504 INFO L225 Difference]: With dead ends: 144 [2021-12-07 00:38:51,504 INFO L226 Difference]: Without dead ends: 144 [2021-12-07 00:38:51,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:38:51,505 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 51 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:51,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 188 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:38:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-07 00:38:51,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 114. [2021-12-07 00:38:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 93 states have (on average 1.3010752688172043) internal successors, (121), 106 states have internal predecessors, (121), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-07 00:38:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2021-12-07 00:38:51,508 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 52 [2021-12-07 00:38:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:51,508 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2021-12-07 00:38:51,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-07 00:38:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2021-12-07 00:38:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-07 00:38:51,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:51,509 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:51,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:51,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:51,710 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash -176607943, now seen corresponding path program 1 times [2021-12-07 00:38:51,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:51,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862334519] [2021-12-07 00:38:51,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:51,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:51,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:51,716 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:51,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-07 00:38:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:51,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:38:51,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-07 00:38:52,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-12-07 00:38:52,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:52,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862334519] [2021-12-07 00:38:52,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862334519] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:52,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:52,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 00:38:52,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018967261] [2021-12-07 00:38:52,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:52,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:38:52,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:38:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:38:52,176 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-07 00:38:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:52,315 INFO L93 Difference]: Finished difference Result 314 states and 366 transitions. [2021-12-07 00:38:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:38:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2021-12-07 00:38:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:52,318 INFO L225 Difference]: With dead ends: 314 [2021-12-07 00:38:52,318 INFO L226 Difference]: Without dead ends: 314 [2021-12-07 00:38:52,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:38:52,319 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 564 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:52,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 311 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:38:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-07 00:38:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 146. [2021-12-07 00:38:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 132 states have internal predecessors, (157), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-07 00:38:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2021-12-07 00:38:52,326 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 55 [2021-12-07 00:38:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:52,327 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2021-12-07 00:38:52,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-07 00:38:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2021-12-07 00:38:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-07 00:38:52,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:52,328 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:52,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-07 00:38:52,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:52,529 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:52,531 INFO L85 PathProgramCache]: Analyzing trace with hash 785915305, now seen corresponding path program 1 times [2021-12-07 00:38:52,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:52,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037262335] [2021-12-07 00:38:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:52,534 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:52,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:52,536 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:52,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-07 00:38:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:52,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:38:52,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:52,673 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 [2021-12-07 00:38:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:52,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:52,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:52,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037262335] [2021-12-07 00:38:52,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037262335] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:52,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:52,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-12-07 00:38:52,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137775955] [2021-12-07 00:38:52,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:52,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:38:52,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:52,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:38:52,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:38:52,913 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:53,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:53,075 INFO L93 Difference]: Finished difference Result 168 states and 200 transitions. [2021-12-07 00:38:53,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:38:53,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2021-12-07 00:38:53,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:53,077 INFO L225 Difference]: With dead ends: 168 [2021-12-07 00:38:53,077 INFO L226 Difference]: Without dead ends: 168 [2021-12-07 00:38:53,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:38:53,077 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 44 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:53,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 244 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2021-12-07 00:38:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-07 00:38:53,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 151. [2021-12-07 00:38:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.304) internal successors, (163), 136 states have internal predecessors, (163), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-07 00:38:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 186 transitions. [2021-12-07 00:38:53,082 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 186 transitions. Word has length 55 [2021-12-07 00:38:53,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:53,082 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 186 transitions. [2021-12-07 00:38:53,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-07 00:38:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 186 transitions. [2021-12-07 00:38:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-07 00:38:53,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:53,083 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:53,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-07 00:38:53,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:53,284 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:53,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:53,285 INFO L85 PathProgramCache]: Analyzing trace with hash 785915306, now seen corresponding path program 1 times [2021-12-07 00:38:53,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:53,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516487956] [2021-12-07 00:38:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:53,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:53,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:53,290 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:53,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-07 00:38:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:53,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-07 00:38:53,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:53,448 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 [2021-12-07 00:38:53,649 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:53,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-07 00:38:54,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-07 00:38:54,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516487956] [2021-12-07 00:38:54,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516487956] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:54,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:38:54,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-07 00:38:54,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539399510] [2021-12-07 00:38:54,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:54,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:38:54,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-07 00:38:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:38:54,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:38:54,690 INFO L87 Difference]: Start difference. First operand 151 states and 186 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-07 00:38:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:55,590 INFO L93 Difference]: Finished difference Result 217 states and 252 transitions. [2021-12-07 00:38:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:38:55,591 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2021-12-07 00:38:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:55,592 INFO L225 Difference]: With dead ends: 217 [2021-12-07 00:38:55,592 INFO L226 Difference]: Without dead ends: 217 [2021-12-07 00:38:55,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:38:55,593 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 421 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:55,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 364 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 190 Invalid, 0 Unknown, 133 Unchecked, 0.5s Time] [2021-12-07 00:38:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-07 00:38:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 176. [2021-12-07 00:38:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 150 states have (on average 1.38) internal successors, (207), 161 states have internal predecessors, (207), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-07 00:38:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 230 transitions. [2021-12-07 00:38:55,600 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 230 transitions. Word has length 55 [2021-12-07 00:38:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:55,600 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 230 transitions. [2021-12-07 00:38:55,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-07 00:38:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 230 transitions. [2021-12-07 00:38:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 00:38:55,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:55,601 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:55,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-07 00:38:55,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-07 00:38:55,802 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-12-07 00:38:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1406429259, now seen corresponding path program 1 times [2021-12-07 00:38:55,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-07 00:38:55,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128911353] [2021-12-07 00:38:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:55,805 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-07 00:38:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat [2021-12-07 00:38:55,806 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-07 00:38:55,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7923d23f-85c8-4e11-bcdc-6cee345be934/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-07 00:38:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:55,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-07 00:38:55,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:55,969 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 15 treesize of output 11 [2021-12-07 00:38:56,016 INFO L354 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2021-12-07 00:38:56,016 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 28 treesize of output 27 [2021-12-07 00:38:56,045 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 00:38:56,045 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 23 treesize of output 22 [2021-12-07 00:38:56,074 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 00:38:56,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-07 00:38:56,107 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 00:38:56,107 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 23 treesize of output 22 [2021-12-07 00:38:56,138 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 00:38:56,138 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 23 treesize of output 22 [2021-12-07 00:38:56,174 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 00:38:56,174 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 23 treesize of output 22 [2021-12-07 00:38:56,206 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 00:38:56,207 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 23 treesize of output 22 [2021-12-07 00:38:56,241 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-07 00:38:56,241 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 23 treesize of output 22 [2021-12-07 00:38:56,276 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-07 00:38:56,276 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 21 treesize of output 20 [2021-12-07 00:38:56,380 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 15 treesize of output 7 [2021-12-07 00:38:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:56,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:39:00,365 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 86 treesize of output 84 [2021-12-07 00:39:00,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197551652844 treesize of output 197534875628