./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_search-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/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_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:01:44,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:01:44,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:01:44,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:01:44,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:01:44,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:01:44,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:01:44,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:01:44,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:01:44,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:01:44,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:01:44,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:01:44,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:01:44,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:01:44,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:01:44,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:01:44,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:01:44,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:01:44,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:01:44,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:01:44,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:01:44,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:01:44,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:01:44,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:01:44,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:01:44,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:01:44,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:01:44,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:01:44,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:01:44,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:01:44,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:01:44,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:01:44,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:01:44,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:01:44,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:01:44,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:01:44,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:01:44,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:01:44,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:01:44,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:01:44,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:01:44,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-06 19:01:44,759 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:01:44,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:01:44,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:01:44,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:01:44,770 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:01:44,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:01:44,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:01:44,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:01:44,771 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:01:44,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:01:44,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:01:44,772 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:01:44,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:01:44,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:01:44,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:01:44,772 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:01:44,773 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:01:44,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:01:44,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:01:44,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:01:44,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:01:44,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:01:44,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:01:44,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:01:44,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:01:44,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:01:44,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:01:44,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:01:44,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:01:44,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:01:44,776 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_757a1df3-509f-4285-9ab8-b076e2b6ac3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 [2021-12-06 19:01:44,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:01:44,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:01:44,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:01:44,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:01:44,978 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:01:44,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-properties/list_search-1.i [2021-12-06 19:01:45,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/03e95e169/4b0c3adc74fd4782bf759e3d5cce18ae/FLAGca3e43b46 [2021-12-06 19:01:45,444 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:01:45,444 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/sv-benchmarks/c/list-properties/list_search-1.i [2021-12-06 19:01:45,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/03e95e169/4b0c3adc74fd4782bf759e3d5cce18ae/FLAGca3e43b46 [2021-12-06 19:01:45,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/03e95e169/4b0c3adc74fd4782bf759e3d5cce18ae [2021-12-06 19:01:45,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:01:45,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:01:45,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:01:45,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:01:45,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:01:45,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:01:45" (1/1) ... [2021-12-06 19:01:45,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b90c6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:45, skipping insertion in model container [2021-12-06 19:01:45,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:01:45" (1/1) ... [2021-12-06 19:01:45,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:01:45,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:01:45,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2021-12-06 19:01:45,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:01:45,727 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) [2021-12-06 19:01:45,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52b372b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:45, skipping insertion in model container [2021-12-06 19:01:45,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:01:45,728 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-06 19:01:45,729 INFO L158 Benchmark]: Toolchain (without parser) took 262.84ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 66.5MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 19:01:45,729 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:01:45,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.29ms. Allocated memory is still 94.4MB. Free memory was 69.9MB in the beginning and 66.5MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 19:01:45,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 94.4MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.29ms. Allocated memory is still 94.4MB. Free memory was 69.9MB in the beginning and 66.5MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 542]: 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_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/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_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_search-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:01:47,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:01:47,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:01:47,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:01:47,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:01:47,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:01:47,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:01:47,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:01:47,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:01:47,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:01:47,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:01:47,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:01:47,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:01:47,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:01:47,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:01:47,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:01:47,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:01:47,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:01:47,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:01:47,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:01:47,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:01:47,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:01:47,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:01:47,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:01:47,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:01:47,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:01:47,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:01:47,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:01:47,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:01:47,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:01:47,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:01:47,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:01:47,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:01:47,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:01:47,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:01:47,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:01:47,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:01:47,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:01:47,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:01:47,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:01:47,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:01:47,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2021-12-06 19:01:47,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:01:47,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:01:47,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:01:47,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:01:47,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:01:47,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:01:47,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:01:47,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:01:47,226 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:01:47,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:01:47,227 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:01:47,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 19:01:47,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:01:47,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:01:47,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:01:47,227 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 19:01:47,228 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 19:01:47,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:01:47,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:01:47,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 19:01:47,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 19:01:47,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:01:47,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:01:47,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:01:47,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:01:47,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:01:47,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:01:47,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:01:47,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:01:47,229 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 19:01:47,229 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 19:01:47,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:01:47,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 19:01:47,230 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_757a1df3-509f-4285-9ab8-b076e2b6ac3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef935aaf7590747bfbe771bbb249e6b84337edbf0e97024d9de82d0d23d44f30 [2021-12-06 19:01:47,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:01:47,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:01:47,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:01:47,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:01:47,484 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:01:47,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/list-properties/list_search-1.i [2021-12-06 19:01:47,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/2c43c5a16/885fe8a8665349679f72aea5ffb808d2/FLAGa91cc9e3a [2021-12-06 19:01:47,968 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:01:47,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/sv-benchmarks/c/list-properties/list_search-1.i [2021-12-06 19:01:47,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/2c43c5a16/885fe8a8665349679f72aea5ffb808d2/FLAGa91cc9e3a [2021-12-06 19:01:47,992 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/data/2c43c5a16/885fe8a8665349679f72aea5ffb808d2 [2021-12-06 19:01:47,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:01:47,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:01:47,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:01:47,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:01:47,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:01:47,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:01:47" (1/1) ... [2021-12-06 19:01:48,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b85b8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:47, skipping insertion in model container [2021-12-06 19:01:48,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:01:47" (1/1) ... [2021-12-06 19:01:48,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:01:48,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:01:48,154 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2021-12-06 19:01:48,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:01:48,280 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 19:01:48,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:01:48,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2021-12-06 19:01:48,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:01:48,325 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:01:48,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/sv-benchmarks/c/list-properties/list_search-1.i[813,826] [2021-12-06 19:01:48,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:01:48,390 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:01:48,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48 WrapperNode [2021-12-06 19:01:48,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:01:48,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:01:48,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:01:48,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:01:48,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,435 INFO L137 Inliner]: procedures = 128, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2021-12-06 19:01:48,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:01:48,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:01:48,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:01:48,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:01:48,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:01:48,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:01:48,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:01:48,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:01:48,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (1/1) ... [2021-12-06 19:01:48,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:01:48,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:01:48,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:01:48,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:01:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 19:01:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:01:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:01:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:01:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:01:48,524 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2021-12-06 19:01:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2021-12-06 19:01:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:01:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 19:01:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 19:01:48,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:01:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:01:48,613 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:01:48,615 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:01:48,869 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:01:48,874 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:01:48,874 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 19:01:48,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:01:48 BoogieIcfgContainer [2021-12-06 19:01:48,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:01:48,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:01:48,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:01:48,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:01:48,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:01:47" (1/3) ... [2021-12-06 19:01:48,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ab22bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:01:48, skipping insertion in model container [2021-12-06 19:01:48,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:01:48" (2/3) ... [2021-12-06 19:01:48,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ab22bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:01:48, skipping insertion in model container [2021-12-06 19:01:48,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:01:48" (3/3) ... [2021-12-06 19:01:48,881 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2021-12-06 19:01:48,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:01:48,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-12-06 19:01:48,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:01:48,923 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 [2021-12-06 19:01:48,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-12-06 19:01:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 57 states have internal predecessors, (64), 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) [2021-12-06 19:01:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 19:01:48,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:48,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 19:01:48,939 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting insert_listErr0REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:48,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash 48806309, now seen corresponding path program 1 times [2021-12-06 19:01:48,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:48,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784352016] [2021-12-06 19:01:48,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:48,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:48,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:48,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 19:01:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:49,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:01:49,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:49,106 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 [2021-12-06 19:01:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:01:49,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:01:49,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:49,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784352016] [2021-12-06 19:01:49,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784352016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:01:49,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:01:49,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:01:49,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012087121] [2021-12-06 19:01:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:01:49,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:01:49,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:49,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:01:49,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:01:49,152 INFO L87 Difference]: Start difference. First operand has 63 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 57 states have internal predecessors, (64), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:49,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:49,267 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2021-12-06 19:01:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:01:49,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-06 19:01:49,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:49,274 INFO L225 Difference]: With dead ends: 59 [2021-12-06 19:01:49,274 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 19:01:49,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:01:49,278 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:49,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 90 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:01:49,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 19:01:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-06 19:01:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 51 states have internal predecessors, (55), 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) [2021-12-06 19:01:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2021-12-06 19:01:49,305 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 5 [2021-12-06 19:01:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:49,305 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2021-12-06 19:01:49,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2021-12-06 19:01:49,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 19:01:49,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:49,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 19:01:49,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:01:49,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:49,508 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting insert_listErr1REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash 48806310, now seen corresponding path program 1 times [2021-12-06 19:01:49,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:49,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253941782] [2021-12-06 19:01:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:49,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:49,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:49,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:49,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 19:01:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:49,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 19:01:49,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:49,635 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 [2021-12-06 19:01:49,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:01:49,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:01:49,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:49,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253941782] [2021-12-06 19:01:49,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253941782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:01:49,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:01:49,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:01:49,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55435671] [2021-12-06 19:01:49,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:01:49,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:01:49,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:49,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:01:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:01:49,647 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:49,714 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-12-06 19:01:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:01:49,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-06 19:01:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:49,716 INFO L225 Difference]: With dead ends: 53 [2021-12-06 19:01:49,716 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 19:01:49,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:01:49,718 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:49,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:01:49,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 19:01:49,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-12-06 19:01:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.457142857142857) internal successors, (51), 47 states have internal predecessors, (51), 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) [2021-12-06 19:01:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2021-12-06 19:01:49,726 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 5 [2021-12-06 19:01:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:49,727 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2021-12-06 19:01:49,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:01:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2021-12-06 19:01:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 19:01:49,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:49,729 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:49,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 19:01:49,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:49,930 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:49,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1546335105, now seen corresponding path program 1 times [2021-12-06 19:01:49,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:49,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629036378] [2021-12-06 19:01:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:49,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:49,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:49,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:49,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 19:01:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:50,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:01:50,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:01:50,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:01:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 19:01:50,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:50,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629036378] [2021-12-06 19:01:50,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629036378] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:01:50,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:01:50,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-12-06 19:01:50,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395406498] [2021-12-06 19:01:50,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:01:50,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:01:50,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:01:50,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:01:50,314 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:01:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:50,504 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-12-06 19:01:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:01:50,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 41 [2021-12-06 19:01:50,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:50,506 INFO L225 Difference]: With dead ends: 72 [2021-12-06 19:01:50,506 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 19:01:50,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:01:50,507 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 98 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:50,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 162 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:01:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 19:01:50,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2021-12-06 19:01:50,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 53 states have internal predecessors, (57), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 19:01:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-12-06 19:01:50,514 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 41 [2021-12-06 19:01:50,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:50,514 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-12-06 19:01:50,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:01:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-12-06 19:01:50,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 19:01:50,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:50,516 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:50,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 19:01:50,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:50,717 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1413963380, now seen corresponding path program 1 times [2021-12-06 19:01:50,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:50,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113796686] [2021-12-06 19:01:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:50,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:50,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:50,719 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:50,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 19:01:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:50,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:01:50,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:50,908 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 [2021-12-06 19:01:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 19:01:50,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:01:50,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:50,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113796686] [2021-12-06 19:01:50,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113796686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:01:50,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:01:50,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:01:50,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308631990] [2021-12-06 19:01:50,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:01:50,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:01:50,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:50,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:01:50,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:01:50,941 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:51,135 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2021-12-06 19:01:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:01:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-12-06 19:01:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:51,136 INFO L225 Difference]: With dead ends: 90 [2021-12-06 19:01:51,136 INFO L226 Difference]: Without dead ends: 90 [2021-12-06 19:01:51,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:01:51,137 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 99 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:51,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:01:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-06 19:01:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 65. [2021-12-06 19:01:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.425531914893617) internal successors, (67), 58 states have internal predecessors, (67), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 19:01:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2021-12-06 19:01:51,143 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 44 [2021-12-06 19:01:51,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:51,143 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2021-12-06 19:01:51,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2021-12-06 19:01:51,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 19:01:51,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:51,145 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:51,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 19:01:51,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:51,346 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:51,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1413963379, now seen corresponding path program 1 times [2021-12-06 19:01:51,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:51,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727574997] [2021-12-06 19:01:51,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:51,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:51,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:51,353 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:51,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 19:01:51,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:51,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:01:51,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:51,591 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 [2021-12-06 19:01:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 19:01:51,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:01:51,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:51,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727574997] [2021-12-06 19:01:51,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727574997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:01:51,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:01:51,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:01:51,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16222103] [2021-12-06 19:01:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:01:51,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:01:51,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:01:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:01:51,659 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:51,872 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2021-12-06 19:01:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:01:51,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-12-06 19:01:51,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:51,873 INFO L225 Difference]: With dead ends: 106 [2021-12-06 19:01:51,873 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 19:01:51,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:01:51,874 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 103 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:51,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 91 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:01:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 19:01:51,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2021-12-06 19:01:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 63 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 19:01:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2021-12-06 19:01:51,880 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 44 [2021-12-06 19:01:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:51,880 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2021-12-06 19:01:51,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2021-12-06 19:01:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 19:01:51,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:51,881 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:51,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 19:01:52,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:52,083 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1662023696, now seen corresponding path program 1 times [2021-12-06 19:01:52,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:52,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790886251] [2021-12-06 19:01:52,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:52,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:52,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:52,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:52,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 19:01:52,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:52,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:01:52,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 19:01:52,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:01:52,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:52,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790886251] [2021-12-06 19:01:52,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790886251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:01:52,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:01:52,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:01:52,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685608381] [2021-12-06 19:01:52,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:01:52,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:01:52,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:01:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:01:52,362 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:52,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:52,532 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2021-12-06 19:01:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:01:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2021-12-06 19:01:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:52,533 INFO L225 Difference]: With dead ends: 106 [2021-12-06 19:01:52,533 INFO L226 Difference]: Without dead ends: 106 [2021-12-06 19:01:52,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:01:52,534 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 109 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:52,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 164 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:01:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-06 19:01:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2021-12-06 19:01:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 19:01:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2021-12-06 19:01:52,539 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 47 [2021-12-06 19:01:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:52,540 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2021-12-06 19:01:52,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2021-12-06 19:01:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 19:01:52,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:52,541 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:52,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-06 19:01:52,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:52,742 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1825916083, now seen corresponding path program 1 times [2021-12-06 19:01:52,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:52,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9770155] [2021-12-06 19:01:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:52,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:52,748 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:52,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 19:01:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:52,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:01:52,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:53,003 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 [2021-12-06 19:01:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 19:01:53,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:01:53,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:53,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9770155] [2021-12-06 19:01:53,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9770155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:01:53,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:01:53,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:01:53,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892400037] [2021-12-06 19:01:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:01:53,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:01:53,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:53,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:01:53,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:01:53,107 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:53,430 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2021-12-06 19:01:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:01:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-12-06 19:01:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:53,432 INFO L225 Difference]: With dead ends: 105 [2021-12-06 19:01:53,432 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 19:01:53,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:01:53,433 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 147 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:53,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 139 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:01:53,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 19:01:53,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2021-12-06 19:01:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 66 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 19:01:53,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-12-06 19:01:53,438 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 49 [2021-12-06 19:01:53,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:53,438 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-12-06 19:01:53,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:53,438 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-12-06 19:01:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 19:01:53,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:53,439 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:53,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-06 19:01:53,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:53,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:53,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1825916084, now seen corresponding path program 1 times [2021-12-06 19:01:53,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304093121] [2021-12-06 19:01:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:53,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:53,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:53,646 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:53,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 19:01:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:53,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:01:53,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:53,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:01:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 19:01:53,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:01:53,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304093121] [2021-12-06 19:01:53,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304093121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:01:53,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:01:53,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:01:53,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440550910] [2021-12-06 19:01:53,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:01:53,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:01:53,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:01:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:01:53,942 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:54,220 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2021-12-06 19:01:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:01:54,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-12-06 19:01:54,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:54,222 INFO L225 Difference]: With dead ends: 96 [2021-12-06 19:01:54,222 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 19:01:54,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:01:54,223 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 125 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:54,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 132 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:01:54,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 19:01:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2021-12-06 19:01:54,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 69 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 19:01:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2021-12-06 19:01:54,227 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 49 [2021-12-06 19:01:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:54,228 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2021-12-06 19:01:54,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:01:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2021-12-06 19:01:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 19:01:54,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:54,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:54,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 19:01:54,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:54,430 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:54,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1986857552, now seen corresponding path program 1 times [2021-12-06 19:01:54,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:54,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962388287] [2021-12-06 19:01:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:54,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:54,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:54,436 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:54,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 19:01:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:54,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:01:54,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:54,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 19:01:54,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:01:54,956 INFO L354 Elim1Store]: treesize reduction 30, result has 31.8 percent of original size [2021-12-06 19:01:54,957 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 23 treesize of output 28 [2021-12-06 19:01:55,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-06 19:01:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:01:55,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:01:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:01:55,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:55,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962388287] [2021-12-06 19:01:55,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962388287] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:01:55,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:01:55,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-12-06 19:01:55,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462256309] [2021-12-06 19:01:55,554 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:01:55,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:01:55,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:01:55,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:01:55,555 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:01:55,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:01:55,826 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2021-12-06 19:01:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:01:55,827 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2021-12-06 19:01:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:01:55,828 INFO L225 Difference]: With dead ends: 85 [2021-12-06 19:01:55,828 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 19:01:55,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:01:55,829 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 18 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:01:55,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 296 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 108 Unchecked, 0.2s Time] [2021-12-06 19:01:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 19:01:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2021-12-06 19:01:55,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 74 states have internal predecessors, (85), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 19:01:55,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2021-12-06 19:01:55,833 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 51 [2021-12-06 19:01:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:01:55,833 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2021-12-06 19:01:55,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:01:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2021-12-06 19:01:55,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 19:01:55,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:01:55,834 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:01:55,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 19:01:56,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:01:56,035 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:01:56,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:01:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1986857553, now seen corresponding path program 1 times [2021-12-06 19:01:56,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:01:56,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934263531] [2021-12-06 19:01:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:56,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:01:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:01:56,041 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:01:56,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 19:01:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:56,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 19:01:56,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:56,373 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 [2021-12-06 19:01:56,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:01:56,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:01:56,590 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-12-06 19:01:56,590 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 18 treesize of output 20 [2021-12-06 19:01:56,700 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 [2021-12-06 19:01:56,703 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 17 treesize of output 9 [2021-12-06 19:01:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:01:56,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:01:57,372 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:01:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934263531] [2021-12-06 19:01:57,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934263531] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:01:57,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [181280981] [2021-12-06 19:01:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:01:57,373 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:01:57,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:01:57,374 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:01:57,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-12-06 19:01:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:01:57,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 19:01:57,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:01:57,848 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 [2021-12-06 19:01:57,852 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 [2021-12-06 19:01:58,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:01:58,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:01:58,311 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:01:58,311 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 18 treesize of output 30 [2021-12-06 19:01:58,323 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-06 19:01:58,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 19:01:58,498 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 [2021-12-06 19:01:58,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-06 19:01:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:01:58,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:01:58,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [181280981] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:01:58,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:01:58,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-06 19:01:58,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048922693] [2021-12-06 19:01:58,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:01:58,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 19:01:58,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:01:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 19:01:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:01:58,958 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:02:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:00,956 INFO L93 Difference]: Finished difference Result 155 states and 168 transitions. [2021-12-06 19:02:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 19:02:00,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2021-12-06 19:02:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:00,958 INFO L225 Difference]: With dead ends: 155 [2021-12-06 19:02:00,958 INFO L226 Difference]: Without dead ends: 155 [2021-12-06 19:02:00,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=269, Invalid=1453, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 19:02:00,959 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 373 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:00,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 318 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 548 Invalid, 0 Unknown, 160 Unchecked, 0.9s Time] [2021-12-06 19:02:00,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-06 19:02:00,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 86. [2021-12-06 19:02:00,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.3235294117647058) internal successors, (90), 79 states have internal predecessors, (90), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:00,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2021-12-06 19:02:00,963 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 51 [2021-12-06 19:02:00,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:00,963 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2021-12-06 19:02:00,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 16 states have internal predecessors, (61), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:02:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2021-12-06 19:02:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 19:02:00,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:00,964 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:00,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-12-06 19:02:01,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 19:02:01,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:02:01,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash -105219752, now seen corresponding path program 1 times [2021-12-06 19:02:01,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:01,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187966750] [2021-12-06 19:02:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:01,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:01,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:01,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:01,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 19:02:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:01,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 19:02:01,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:01,757 INFO L354 Elim1Store]: treesize reduction 157, result has 14.7 percent of original size [2021-12-06 19:02:01,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 36 [2021-12-06 19:02:01,773 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 19:02:01,773 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 22 treesize of output 21 [2021-12-06 19:02:01,816 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-06 19:02:01,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 13 [2021-12-06 19:02:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 19:02:01,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:02:01,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:01,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187966750] [2021-12-06 19:02:01,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187966750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:02:01,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:02:01,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:02:01,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130129362] [2021-12-06 19:02:01,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:02:01,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:02:01,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:01,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:02:01,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:02:01,849 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:02:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:02,081 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2021-12-06 19:02:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:02:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2021-12-06 19:02:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:02,082 INFO L225 Difference]: With dead ends: 83 [2021-12-06 19:02:02,082 INFO L226 Difference]: Without dead ends: 83 [2021-12-06 19:02:02,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:02:02,083 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 16 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:02,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 286 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 130 Invalid, 0 Unknown, 16 Unchecked, 0.2s Time] [2021-12-06 19:02:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-06 19:02:02,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-12-06 19:02:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:02,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2021-12-06 19:02:02,086 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 52 [2021-12-06 19:02:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:02,086 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2021-12-06 19:02:02,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:02:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2021-12-06 19:02:02,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 19:02:02,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:02,087 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:02,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 19:02:02,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:02:02,288 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:02,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1534863564, now seen corresponding path program 1 times [2021-12-06 19:02:02,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:02,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537163971] [2021-12-06 19:02:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:02,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:02,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:02,294 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:02,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 19:02:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:02,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 19:02:02,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:02,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:02,658 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 16 treesize of output 8 [2021-12-06 19:02:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:02:02,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:02:02,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:02,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537163971] [2021-12-06 19:02:02,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537163971] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:02:02,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:02,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 18 [2021-12-06 19:02:02,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655233848] [2021-12-06 19:02:02,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:02,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 19:02:02,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 19:02:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:02:02,957 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:02:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:03,960 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-12-06 19:02:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:02:03,960 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2021-12-06 19:02:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:03,961 INFO L225 Difference]: With dead ends: 123 [2021-12-06 19:02:03,961 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 19:02:03,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 19:02:03,963 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 317 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:03,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 382 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:02:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 19:02:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 82. [2021-12-06 19:02:03,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.296875) internal successors, (83), 75 states have internal predecessors, (83), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-12-06 19:02:03,966 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 54 [2021-12-06 19:02:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:03,966 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-12-06 19:02:03,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:02:03,966 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-12-06 19:02:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 19:02:03,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:03,967 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:03,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 19:02:04,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:02:04,167 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:04,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 527248649, now seen corresponding path program 1 times [2021-12-06 19:02:04,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:04,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663751656] [2021-12-06 19:02:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:04,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:04,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:04,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:04,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 19:02:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:04,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:02:04,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:04,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:04,512 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 [2021-12-06 19:02:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:02:04,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:04,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-06 19:02:06,221 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:02:06,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:06,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663751656] [2021-12-06 19:02:06,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663751656] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:02:06,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:06,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2021-12-06 19:02:06,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988611043] [2021-12-06 19:02:06,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:06,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 19:02:06,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:06,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 19:02:06,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2021-12-06 19:02:06,223 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:02:09,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:09,401 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2021-12-06 19:02:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 19:02:09,401 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 56 [2021-12-06 19:02:09,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:09,402 INFO L225 Difference]: With dead ends: 139 [2021-12-06 19:02:09,402 INFO L226 Difference]: Without dead ends: 139 [2021-12-06 19:02:09,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=383, Invalid=1969, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 19:02:09,403 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 443 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:09,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 509 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-06 19:02:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-06 19:02:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 82. [2021-12-06 19:02:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.28125) internal successors, (82), 75 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-12-06 19:02:09,406 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 56 [2021-12-06 19:02:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:09,406 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-12-06 19:02:09,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 24 states have internal predecessors, (75), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:02:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-12-06 19:02:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 19:02:09,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:09,407 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:09,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-06 19:02:09,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:02:09,608 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash -69599988, now seen corresponding path program 2 times [2021-12-06 19:02:09,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:09,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119863602] [2021-12-06 19:02:09,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:02:09,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:09,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:09,614 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:09,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 19:02:09,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:02:09,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:09,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 19:02:09,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:10,001 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 [2021-12-06 19:02:10,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:10,160 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:02:10,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 48 [2021-12-06 19:02:10,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:10,435 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:10,599 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 19:02:10,599 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 43 treesize of output 47 [2021-12-06 19:02:10,611 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 19:02:10,612 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 1 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 19:02:10,624 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 28 treesize of output 24 [2021-12-06 19:02:11,124 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 [2021-12-06 19:02:12,403 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:12,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 61 [2021-12-06 19:02:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:12,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:13,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:13,052 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2021-12-06 19:02:13,065 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_114 (_ BitVec 32)) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select v_arrayElimArr_2 (_ bv4 32)) c_~head~0.base)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_114 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_114 v_arrayElimArr_2) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))))))))))))) (_ bv1 1))))) is different from false [2021-12-06 19:02:13,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:13,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119863602] [2021-12-06 19:02:13,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119863602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:13,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [684333246] [2021-12-06 19:02:13,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:02:13,067 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:02:13,068 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:02:13,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-12-06 19:02:13,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:02:13,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:13,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 19:02:13,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:13,582 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 [2021-12-06 19:02:13,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:13,885 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:02:13,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 47 [2021-12-06 19:02:14,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:14,303 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:14,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:14,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 45 treesize of output 41 [2021-12-06 19:02:14,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:14,597 INFO L354 Elim1Store]: treesize reduction 45, result has 42.3 percent of original size [2021-12-06 19:02:14,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 73 [2021-12-06 19:02:15,072 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 [2021-12-06 19:02:15,656 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:02:15,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 50 [2021-12-06 19:02:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:16,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:16,383 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:16,383 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2021-12-06 19:02:16,405 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_120 (_ BitVec 32)) (v_arrayElimArr_4 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_120 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_120 v_arrayElimArr_4) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset))))))))))))))) (_ bv1 1))) (not (= (select v_arrayElimArr_4 (_ bv4 32)) c_~head~0.base)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_120)))))) is different from false [2021-12-06 19:02:16,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [684333246] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:16,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:16,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 33 [2021-12-06 19:02:16,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803181752] [2021-12-06 19:02:16,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:16,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 19:02:16,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 19:02:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1417, Unknown=5, NotChecked=154, Total=1722 [2021-12-06 19:02:16,410 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 19:02:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:16,447 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2021-12-06 19:02:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:02:16,448 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 58 [2021-12-06 19:02:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:16,449 INFO L225 Difference]: With dead ends: 93 [2021-12-06 19:02:16,449 INFO L226 Difference]: Without dead ends: 93 [2021-12-06 19:02:16,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=146, Invalid=1417, Unknown=5, NotChecked=154, Total=1722 [2021-12-06 19:02:16,451 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 11 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:16,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 568 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 239 Unchecked, 0.0s Time] [2021-12-06 19:02:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-06 19:02:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2021-12-06 19:02:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 79 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:16,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2021-12-06 19:02:16,455 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 58 [2021-12-06 19:02:16,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:16,455 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2021-12-06 19:02:16,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.515151515151515) internal successors, (83), 30 states have internal predecessors, (83), 4 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 19:02:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2021-12-06 19:02:16,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 19:02:16,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:16,456 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:16,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-06 19:02:16,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-12-06 19:02:16,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:16,858 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash -69599987, now seen corresponding path program 2 times [2021-12-06 19:02:16,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:16,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864471839] [2021-12-06 19:02:16,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:02:16,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:16,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:16,862 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:16,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 19:02:17,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:02:17,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:17,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 19:02:17,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:17,334 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 [2021-12-06 19:02:17,337 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 [2021-12-06 19:02:17,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:17,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:17,661 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:02:17,661 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 18 treesize of output 30 [2021-12-06 19:02:17,681 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:02:17,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2021-12-06 19:02:18,037 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:18,045 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:18,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:18,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 46 [2021-12-06 19:02:18,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:18,279 INFO L354 Elim1Store]: treesize reduction 4, result has 77.8 percent of original size [2021-12-06 19:02:18,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-12-06 19:02:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:18,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:02:18,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:02:19,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:02:19,040 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 19:02:19,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2021-12-06 19:02:19,050 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:02:19,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-06 19:02:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:19,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:20,457 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:20,457 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2021-12-06 19:02:20,467 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:20,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2021-12-06 19:02:20,483 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 6 treesize of output 4 [2021-12-06 19:02:20,591 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 6 treesize of output 4 [2021-12-06 19:02:20,707 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_126 (_ BitVec 32)) (v_arrayElimArr_7 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_126)))) (not (= (select v_arrayElimArr_7 (_ bv4 32)) c_~head~0.base)) (let ((.cse1 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_126 v_arrayElimArr_8) c_~head~0.base) .cse1))) (let ((.cse0 (bvadd (_ bv4 32) .cse2))) (and (bvule .cse0 (select (store |c_#length| v_~head~0.base_126 (_ bv8 32)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_126 v_arrayElimArr_7) c_~head~0.base) .cse1))) (bvule .cse2 .cse0))))) (not (= (select v_arrayElimArr_8 (_ bv4 32)) c_~head~0.offset)))) is different from false [2021-12-06 19:02:20,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:20,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864471839] [2021-12-06 19:02:20,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864471839] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:20,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [698337181] [2021-12-06 19:02:20,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:02:20,713 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:20,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:02:20,714 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:02:20,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-12-06 19:02:21,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:02:21,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:21,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 19:02:21,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:21,246 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 [2021-12-06 19:02:21,249 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 [2021-12-06 19:02:21,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:21,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:21,458 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:02:21,459 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 18 treesize of output 30 [2021-12-06 19:02:21,484 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:02:21,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 41 [2021-12-06 19:02:21,754 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:21,762 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:21,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:21,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 60 treesize of output 50 [2021-12-06 19:02:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:21,893 INFO L354 Elim1Store]: treesize reduction 4, result has 77.8 percent of original size [2021-12-06 19:02:21,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 41 [2021-12-06 19:02:21,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:02:21,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:21,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:02:22,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:02:22,439 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 19:02:22,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2021-12-06 19:02:22,449 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:02:22,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-06 19:02:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:22,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:22,940 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:22,940 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2021-12-06 19:02:22,948 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:22,948 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 59 [2021-12-06 19:02:22,968 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 6 treesize of output 4 [2021-12-06 19:02:23,158 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 6 treesize of output 4 [2021-12-06 19:02:23,196 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_132 (_ BitVec 32)) (v_arrayElimArr_11 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_12 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= c_~head~0.offset (select v_arrayElimArr_12 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_132)))) (not (= (select v_arrayElimArr_11 (_ bv4 32)) c_~head~0.base)) (let ((.cse2 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_132 v_arrayElimArr_12) c_~head~0.base) .cse2))) (let ((.cse1 (bvadd (_ bv4 32) .cse0))) (and (bvule .cse0 .cse1) (bvule .cse1 (select (store |c_#length| v_~head~0.base_132 (_ bv8 32)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_132 v_arrayElimArr_11) c_~head~0.base) .cse2))))))))) is different from false [2021-12-06 19:02:23,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [698337181] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:23,200 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:23,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-12-06 19:02:23,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601283263] [2021-12-06 19:02:23,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:23,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 19:02:23,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:23,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 19:02:23,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=591, Unknown=5, NotChecked=98, Total=756 [2021-12-06 19:02:23,201 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 19:02:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:24,319 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2021-12-06 19:02:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:02:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-12-06 19:02:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:24,322 INFO L225 Difference]: With dead ends: 101 [2021-12-06 19:02:24,322 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 19:02:24,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 119 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=118, Invalid=1068, Unknown=12, NotChecked=134, Total=1332 [2021-12-06 19:02:24,323 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 21 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:24,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 498 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 321 Unchecked, 0.2s Time] [2021-12-06 19:02:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 19:02:24,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2021-12-06 19:02:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 79 states have internal predecessors, (87), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-12-06 19:02:24,330 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 58 [2021-12-06 19:02:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:24,330 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-12-06 19:02:24,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-06 19:02:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-12-06 19:02:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:02:24,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:24,331 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:24,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 19:02:24,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-12-06 19:02:24,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:24,733 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:24,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash 569105948, now seen corresponding path program 1 times [2021-12-06 19:02:24,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:24,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390995238] [2021-12-06 19:02:24,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:24,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:24,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:24,737 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:24,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 19:02:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:25,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-06 19:02:25,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:25,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-12-06 19:02:25,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,228 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:25,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 60 [2021-12-06 19:02:25,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2021-12-06 19:02:25,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:25,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:25,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 56 [2021-12-06 19:02:25,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:25,696 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:02:25,696 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 59 treesize of output 47 [2021-12-06 19:02:26,104 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 61 treesize of output 37 [2021-12-06 19:02:26,108 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 [2021-12-06 19:02:26,399 INFO L354 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2021-12-06 19:02:26,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 87 treesize of output 56 [2021-12-06 19:02:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:02:26,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:27,286 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:27,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 75 [2021-12-06 19:02:27,307 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_138 (_ BitVec 32)) (v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 8)))) (or (not (= (let ((.cse0 (select (store |c_#memory_int| v_~head~0.base_138 v_arrayElimArr_15) c_~head~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~head~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~head~0.offset))) (select .cse0 (bvadd c_~head~0.offset (_ bv1 32)))) (select .cse0 c_~head~0.offset))) (_ bv2 32))) (not (= (select v_arrayElimArr_15 (_ bv2 32)) (_ bv0 8))) (not (= (_ bv0 8) (select v_arrayElimArr_15 (_ bv1 32)))) (not (= (select v_arrayElimArr_15 (_ bv3 32)) (_ bv0 8))) (not (= (select v_arrayElimArr_15 (_ bv0 32)) (_ bv3 8))))) is different from false [2021-12-06 19:02:27,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:27,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390995238] [2021-12-06 19:02:27,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390995238] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:27,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [143727603] [2021-12-06 19:02:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:27,310 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:27,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:02:27,310 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:02:27,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-12-06 19:02:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:27,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-06 19:02:27,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:27,845 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 [2021-12-06 19:02:27,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:27,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:27,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:27,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:27,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:27,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:27,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-12-06 19:02:28,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:28,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2021-12-06 19:02:28,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:28,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:28,756 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-06 19:02:28,756 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 [2021-12-06 19:02:28,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 89 treesize of output 67 [2021-12-06 19:02:29,128 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 82 treesize of output 58 [2021-12-06 19:02:29,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 65 treesize of output 41 [2021-12-06 19:02:29,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:29,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:29,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:29,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:29,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:29,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:02:29,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:29,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:02:29,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:29,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:02:29,333 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:29,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 60 treesize of output 34 [2021-12-06 19:02:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 19:02:29,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:29,756 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_144 (_ BitVec 32)) (v_ArrVal_2652 (Array (_ BitVec 32) (_ BitVec 8)))) (or (not (= (_ bv2 32) (let ((.cse0 (select (store |c_#memory_int| v_~head~0.base_144 v_ArrVal_2652) c_~head~0.base))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) c_~head~0.offset)) (select .cse0 (bvadd (_ bv2 32) c_~head~0.offset))) (select .cse0 (bvadd c_~head~0.offset (_ bv1 32)))) (select .cse0 c_~head~0.offset))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_~head~0.base_144))))))) is different from false [2021-12-06 19:02:29,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [143727603] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:29,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:29,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 34 [2021-12-06 19:02:29,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106630121] [2021-12-06 19:02:29,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:29,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 19:02:29,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 19:02:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1375, Unknown=6, NotChecked=150, Total=1640 [2021-12-06 19:02:29,760 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:02:32,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:32,024 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2021-12-06 19:02:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:02:32,025 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2021-12-06 19:02:32,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:32,025 INFO L225 Difference]: With dead ends: 91 [2021-12-06 19:02:32,025 INFO L226 Difference]: Without dead ends: 91 [2021-12-06 19:02:32,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=233, Invalid=2519, Unknown=12, NotChecked=206, Total=2970 [2021-12-06 19:02:32,027 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 18 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:32,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 742 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 197 Unchecked, 0.4s Time] [2021-12-06 19:02:32,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-06 19:02:32,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-12-06 19:02:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 79 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-12-06 19:02:32,029 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 59 [2021-12-06 19:02:32,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:32,030 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-12-06 19:02:32,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.264705882352941) internal successors, (77), 30 states have internal predecessors, (77), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 19:02:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-12-06 19:02:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 19:02:32,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:32,030 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:32,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-12-06 19:02:32,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-06 19:02:32,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:02:32,432 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:32,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2137373797, now seen corresponding path program 1 times [2021-12-06 19:02:32,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:32,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520685398] [2021-12-06 19:02:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:32,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:32,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:32,437 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:32,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 19:02:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:32,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 19:02:32,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 19:02:32,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:02:32,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:32,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520685398] [2021-12-06 19:02:32,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520685398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:02:32,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:02:32,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:02:32,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361275060] [2021-12-06 19:02:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:02:32,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:02:32,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:02:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:02:32,758 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:02:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:32,763 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2021-12-06 19:02:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:02:32,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2021-12-06 19:02:32,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:32,764 INFO L225 Difference]: With dead ends: 84 [2021-12-06 19:02:32,764 INFO L226 Difference]: Without dead ends: 84 [2021-12-06 19:02:32,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:02:32,765 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:32,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:02:32,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-06 19:02:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-12-06 19:02:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 77 states have internal predecessors, (82), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2021-12-06 19:02:32,767 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 59 [2021-12-06 19:02:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:32,767 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2021-12-06 19:02:32,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 19:02:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2021-12-06 19:02:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 19:02:32,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:32,768 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:32,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 19:02:32,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:02:32,969 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1015974627, now seen corresponding path program 1 times [2021-12-06 19:02:32,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:32,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601652923] [2021-12-06 19:02:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:32,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:32,975 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:32,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 19:02:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:33,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-06 19:02:33,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:33,415 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 [2021-12-06 19:02:33,418 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 [2021-12-06 19:02:33,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:33,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:33,757 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:02:33,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 43 [2021-12-06 19:02:33,769 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 18 treesize of output 20 [2021-12-06 19:02:34,118 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:34,126 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:34,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:34,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 52 treesize of output 42 [2021-12-06 19:02:34,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:34,350 INFO L354 Elim1Store]: treesize reduction 4, result has 77.8 percent of original size [2021-12-06 19:02:34,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2021-12-06 19:02:34,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:34,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:02:34,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:02:35,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:02:35,206 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 19:02:35,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2021-12-06 19:02:35,216 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:02:35,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-06 19:02:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:35,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:36,765 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:36,765 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2021-12-06 19:02:36,778 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:36,778 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 61 [2021-12-06 19:02:36,804 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 6 treesize of output 4 [2021-12-06 19:02:36,957 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 6 treesize of output 4 [2021-12-06 19:02:37,020 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_18 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_19 (Array (_ BitVec 32) (_ BitVec 32))) (v_~head~0.base_150 (_ BitVec 32))) (or (let ((.cse2 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_150 v_arrayElimArr_19) c_~head~0.base) .cse2))) (let ((.cse1 (bvadd (_ bv8 32) .cse0))) (and (bvule (bvadd (_ bv4 32) .cse0) .cse1) (bvule .cse1 (select (store |c_#length| v_~head~0.base_150 (_ bv8 32)) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_150 v_arrayElimArr_18) c_~head~0.base) .cse2))))))) (not (= (select v_arrayElimArr_18 (_ bv4 32)) c_~head~0.base)) (not (= (select v_arrayElimArr_19 (_ bv4 32)) c_~head~0.offset)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_~head~0.base_150)))))))) is different from false [2021-12-06 19:02:37,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:37,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601652923] [2021-12-06 19:02:37,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601652923] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:37,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1642980340] [2021-12-06 19:02:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:02:37,024 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:02:37,025 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:02:37,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-12-06 19:02:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:02:37,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-06 19:02:37,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:37,676 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 [2021-12-06 19:02:37,681 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 [2021-12-06 19:02:37,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:37,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:37,895 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:02:37,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 42 [2021-12-06 19:02:37,905 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 18 treesize of output 20 [2021-12-06 19:02:38,358 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:38,364 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:38,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:38,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 54 treesize of output 44 [2021-12-06 19:02:38,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:38,729 INFO L354 Elim1Store]: treesize reduction 4, result has 77.8 percent of original size [2021-12-06 19:02:38,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-12-06 19:02:38,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:02:38,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:38,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:02:39,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:02:39,665 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 19:02:39,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 47 [2021-12-06 19:02:39,677 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:02:39,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2021-12-06 19:02:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:39,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:40,383 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:40,383 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 70 [2021-12-06 19:02:40,392 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:40,393 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 61 [2021-12-06 19:02:40,410 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 6 treesize of output 4 [2021-12-06 19:02:40,523 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 6 treesize of output 4 [2021-12-06 19:02:40,655 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 6 treesize of output 4 [2021-12-06 19:02:40,734 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_156 (_ BitVec 32)) (v_arrayElimArr_22 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_23 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= c_~head~0.offset (select v_arrayElimArr_23 (_ bv4 32)))) (not (= (select v_arrayElimArr_22 (_ bv4 32)) c_~head~0.base)) (and (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_156 v_arrayElimArr_23) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32)))) (forall ((v_ArrVal_3125 (_ BitVec 32))) (let ((.cse1 (bvadd (_ bv4 32) c_~head~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_156 v_arrayElimArr_23) c_~head~0.base) .cse1) (_ bv8 32)) (select (store |c_#length| v_~head~0.base_156 v_ArrVal_3125) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_156 v_arrayElimArr_22) c_~head~0.base) .cse1)))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_~head~0.base_156))))))) is different from false [2021-12-06 19:02:40,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1642980340] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:40,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:40,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 29 [2021-12-06 19:02:40,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098046296] [2021-12-06 19:02:40,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:40,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 19:02:40,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 19:02:40,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1154, Unknown=15, NotChecked=138, Total=1406 [2021-12-06 19:02:40,741 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 30 states, 29 states have (on average 2.793103448275862) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 19:02:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:42,207 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-12-06 19:02:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 19:02:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.793103448275862) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2021-12-06 19:02:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:42,208 INFO L225 Difference]: With dead ends: 96 [2021-12-06 19:02:42,208 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 19:02:42,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=167, Invalid=1794, Unknown=27, NotChecked=174, Total=2162 [2021-12-06 19:02:42,209 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 14 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:42,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 734 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 331 Unchecked, 0.3s Time] [2021-12-06 19:02:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 19:02:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2021-12-06 19:02:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 80 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2021-12-06 19:02:42,212 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 61 [2021-12-06 19:02:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:42,212 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2021-12-06 19:02:42,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.793103448275862) internal successors, (81), 26 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 19:02:42,212 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2021-12-06 19:02:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 19:02:42,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:42,213 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:42,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2021-12-06 19:02:42,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-06 19:02:42,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:02:42,614 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1021799568, now seen corresponding path program 2 times [2021-12-06 19:02:42,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:42,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204827756] [2021-12-06 19:02:42,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:02:42,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:42,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:42,620 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:42,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-06 19:02:43,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:02:43,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:43,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 19:02:43,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:43,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:43,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:43,331 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:43,451 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 19:02:43,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 19 treesize of output 29 [2021-12-06 19:02:43,578 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 [2021-12-06 19:02:43,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:43,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2021-12-06 19:02:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:43,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:44,146 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:44,146 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-12-06 19:02:44,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204827756] [2021-12-06 19:02:44,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204827756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [557284424] [2021-12-06 19:02:44,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:02:44,202 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:44,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:02:44,203 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:02:44,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-12-06 19:02:44,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:02:44,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:44,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 19:02:44,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:44,729 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 [2021-12-06 19:02:44,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:45,206 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:45,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:45,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:45,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 29 [2021-12-06 19:02:45,420 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-06 19:02:45,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 19:02:45,625 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 33 treesize of output 21 [2021-12-06 19:02:45,831 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:02:45,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2021-12-06 19:02:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:02:45,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:46,122 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:46,123 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2021-12-06 19:02:46,142 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_168 (_ BitVec 32)) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_~head~0.base_168)))))) (not (= (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_168 v_arrayElimArr_27) c_~head~0.base) (bvadd (_ bv4 32) c_~head~0.offset)) (_ bv0 32))) (not (= (select v_arrayElimArr_27 (_ bv4 32)) c_~head~0.base)))) is different from false [2021-12-06 19:02:46,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [557284424] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:46,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:02:46,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 35 [2021-12-06 19:02:46,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771545163] [2021-12-06 19:02:46,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:02:46,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 19:02:46,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:02:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 19:02:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1436, Unknown=6, NotChecked=76, Total=1640 [2021-12-06 19:02:46,145 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 19:02:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:02:47,443 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2021-12-06 19:02:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 19:02:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 61 [2021-12-06 19:02:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:02:47,444 INFO L225 Difference]: With dead ends: 96 [2021-12-06 19:02:47,444 INFO L226 Difference]: Without dead ends: 96 [2021-12-06 19:02:47,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=292, Invalid=2884, Unknown=20, NotChecked=110, Total=3306 [2021-12-06 19:02:47,446 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 32 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:02:47,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 807 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 224 Invalid, 0 Unknown, 167 Unchecked, 0.3s Time] [2021-12-06 19:02:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-06 19:02:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2021-12-06 19:02:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 80 states have internal predecessors, (85), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:02:47,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2021-12-06 19:02:47,449 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 61 [2021-12-06 19:02:47,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:02:47,450 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2021-12-06 19:02:47,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 30 states have internal predecessors, (82), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 19:02:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2021-12-06 19:02:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:02:47,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:02:47,451 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:02:47,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-12-06 19:02:47,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2021-12-06 19:02:47,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:47,853 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:02:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:02:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash -357187888, now seen corresponding path program 3 times [2021-12-06 19:02:47,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:02:47,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30060964] [2021-12-06 19:02:47,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:02:47,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:02:47,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:02:47,856 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:02:47,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-06 19:02:48,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:02:48,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:48,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 19:02:48,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:48,753 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 [2021-12-06 19:02:48,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:48,906 INFO L354 Elim1Store]: treesize reduction 30, result has 31.8 percent of original size [2021-12-06 19:02:48,906 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 [2021-12-06 19:02:49,129 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:49,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:49,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:49,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2021-12-06 19:02:49,300 INFO L354 Elim1Store]: treesize reduction 112, result has 29.6 percent of original size [2021-12-06 19:02:49,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 69 [2021-12-06 19:02:49,685 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:49,700 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:49,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:49,904 INFO L354 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2021-12-06 19:02:49,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 64 [2021-12-06 19:02:49,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:49,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:49,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:49,936 INFO L354 Elim1Store]: treesize reduction 89, result has 31.5 percent of original size [2021-12-06 19:02:49,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 107 [2021-12-06 19:02:49,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:49,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:02:51,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:51,810 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:02:51,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 31 [2021-12-06 19:02:52,903 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-06 19:02:52,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 69 [2021-12-06 19:02:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:02:53,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:02:54,420 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:54,420 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 59 [2021-12-06 19:02:54,426 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:02:54,426 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 56 [2021-12-06 19:02:54,478 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_31 (Array (_ BitVec 32) (_ BitVec 32))) (v_~head~0.base_174 (_ BitVec 32)) (v_arrayElimArr_32 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_~head~0.base_174))))) (not (= (select v_arrayElimArr_31 (_ bv4 32)) c_~head~0.base)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_~head~0.base_174 (_ bv1 1)) (let ((.cse1 (bvadd (_ bv4 32) c_~head~0.offset))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| v_~head~0.base_174 v_arrayElimArr_31))) (select .cse0 (select (select .cse0 c_~head~0.base) .cse1))) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_174 v_arrayElimArr_32) c_~head~0.base) .cse1))))))))))))))))))) (not (= (select v_arrayElimArr_32 (_ bv4 32)) c_~head~0.offset)))) is different from false [2021-12-06 19:02:54,481 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:02:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30060964] [2021-12-06 19:02:54,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30060964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:02:54,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160574774] [2021-12-06 19:02:54,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:02:54,481 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:02:54,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:02:54,482 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:02:54,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-12-06 19:02:55,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:02:55,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:02:56,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 91 conjunts are in the unsatisfiable core [2021-12-06 19:02:56,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:02:56,016 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 [2021-12-06 19:02:56,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:56,382 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:02:56,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 44 [2021-12-06 19:02:56,530 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 [2021-12-06 19:02:56,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:02:56,909 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:57,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:57,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 39 treesize of output 35 [2021-12-06 19:02:57,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:57,269 INFO L354 Elim1Store]: treesize reduction 45, result has 42.3 percent of original size [2021-12-06 19:02:57,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 66 [2021-12-06 19:02:58,117 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:58,129 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:02:58,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:58,551 INFO L354 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2021-12-06 19:02:58,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 88 [2021-12-06 19:02:58,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:58,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:58,604 INFO L354 Elim1Store]: treesize reduction 75, result has 41.4 percent of original size [2021-12-06 19:02:58,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 120 [2021-12-06 19:02:58,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:58,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 28 [2021-12-06 19:02:58,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:02:58,641 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 18 treesize of output 20 [2021-12-06 19:03:01,295 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 19:03:01,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 158 [2021-12-06 19:03:02,749 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-06 19:03:02,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 102 [2021-12-06 19:03:02,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-06 19:03:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:03:03,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:03:08,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:08,026 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 149 [2021-12-06 19:03:08,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:08,046 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 138 [2021-12-06 19:03:08,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1160574774] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:03:08,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:03:08,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 52 [2021-12-06 19:03:08,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877269717] [2021-12-06 19:03:08,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:03:08,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-06 19:03:08,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:03:08,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-06 19:03:08,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4446, Unknown=31, NotChecked=136, Total=4970 [2021-12-06 19:03:08,803 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 53 states, 52 states have (on average 2.019230769230769) internal successors, (105), 47 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 19:03:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:03:09,171 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-12-06 19:03:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 19:03:09,171 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.019230769230769) internal successors, (105), 47 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 65 [2021-12-06 19:03:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:03:09,172 INFO L225 Difference]: With dead ends: 105 [2021-12-06 19:03:09,172 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 19:03:09,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 106 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2098 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=376, Invalid=4702, Unknown=38, NotChecked=140, Total=5256 [2021-12-06 19:03:09,174 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 12 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:03:09,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 744 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 375 Unchecked, 0.1s Time] [2021-12-06 19:03:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 19:03:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2021-12-06 19:03:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 91 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:03:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2021-12-06 19:03:09,177 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 65 [2021-12-06 19:03:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:03:09,177 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2021-12-06 19:03:09,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.019230769230769) internal successors, (105), 47 states have internal predecessors, (105), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 19:03:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2021-12-06 19:03:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:03:09,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:03:09,178 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:03:09,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-06 19:03:09,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2021-12-06 19:03:09,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 19:03:09,579 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:03:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:03:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash -357187887, now seen corresponding path program 3 times [2021-12-06 19:03:09,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:03:09,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826688133] [2021-12-06 19:03:09,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:03:09,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:03:09,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:03:09,585 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:03:09,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-12-06 19:03:10,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:03:10,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:03:10,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-06 19:03:10,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:03:10,539 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 [2021-12-06 19:03:10,543 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 [2021-12-06 19:03:10,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:10,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:10,848 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-06 19:03:10,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-12-06 19:03:10,857 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 18 treesize of output 20 [2021-12-06 19:03:11,179 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:11,186 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:11,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:11,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 32 [2021-12-06 19:03:11,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:11,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:03:11,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:11,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2021-12-06 19:03:11,406 INFO L354 Elim1Store]: treesize reduction 45, result has 25.0 percent of original size [2021-12-06 19:03:11,406 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 1 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:03:11,770 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:11,778 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:11,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:12,038 INFO L354 Elim1Store]: treesize reduction 44, result has 49.4 percent of original size [2021-12-06 19:03:12,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 58 [2021-12-06 19:03:12,114 INFO L354 Elim1Store]: treesize reduction 32, result has 52.2 percent of original size [2021-12-06 19:03:12,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 73 [2021-12-06 19:03:12,144 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-12-06 19:03:12,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 30 [2021-12-06 19:03:12,175 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 16 treesize of output 12 [2021-12-06 19:03:12,208 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 45 treesize of output 35 [2021-12-06 19:03:14,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:03:14,899 INFO L354 Elim1Store]: treesize reduction 87, result has 38.7 percent of original size [2021-12-06 19:03:14,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 151 [2021-12-06 19:03:15,024 INFO L354 Elim1Store]: treesize reduction 119, result has 22.2 percent of original size [2021-12-06 19:03:15,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 158 treesize of output 159 [2021-12-06 19:03:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 7 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:03:16,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:03:18,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:18,163 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 78 [2021-12-06 19:03:18,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:18,171 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 66 [2021-12-06 19:03:18,259 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:18,259 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 80 [2021-12-06 19:03:18,265 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:18,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 71 [2021-12-06 19:03:18,356 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_~head~0.base_186 (_ BitVec 32)) (v_arrayElimArr_44 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_45 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= c_~head~0.offset (select v_arrayElimArr_45 (_ bv4 32)))) (not (= (select v_arrayElimArr_44 (_ bv4 32)) c_~head~0.base)) (let ((.cse0 (store |c_#memory_$Pointer$.offset| v_~head~0.base_186 v_arrayElimArr_45)) (.cse3 (store |c_#memory_$Pointer$.base| v_~head~0.base_186 v_arrayElimArr_44)) (.cse4 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse1 (select (select .cse3 c_~head~0.base) .cse4)) (.cse2 (bvadd (_ bv4 32) (select (select .cse0 c_~head~0.base) .cse4)))) (bvule (bvadd (_ bv4 32) (select (select .cse0 .cse1) .cse2)) (select (store |c_#length| v_~head~0.base_186 (_ bv8 32)) (select (select .cse3 .cse1) .cse2))))))) (forall ((v_arrayElimArr_42 (Array (_ BitVec 32) (_ BitVec 32))) (v_~head~0.base_186 (_ BitVec 32)) (v_arrayElimArr_43 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select v_arrayElimArr_43 (_ bv4 32)) c_~head~0.offset)) (not (= (select v_arrayElimArr_42 (_ bv4 32)) c_~head~0.base)) (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.offset| v_~head~0.base_186 v_arrayElimArr_43)) (.cse7 (bvadd (_ bv4 32) c_~head~0.offset))) (select (select .cse6 (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_186 v_arrayElimArr_42) c_~head~0.base) .cse7)) (bvadd (_ bv4 32) (select (select .cse6 c_~head~0.base) .cse7)))))) (bvule .cse5 (bvadd (_ bv4 32) .cse5)))))) is different from false [2021-12-06 19:03:18,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:03:18,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [826688133] [2021-12-06 19:03:18,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [826688133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:03:18,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [369149597] [2021-12-06 19:03:18,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:03:18,367 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:03:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:03:18,368 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:03:18,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-12-06 19:03:20,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:03:20,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:03:20,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 112 conjunts are in the unsatisfiable core [2021-12-06 19:03:20,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:03:20,288 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 [2021-12-06 19:03:20,292 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 [2021-12-06 19:03:20,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:20,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:21,254 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:03:21,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2021-12-06 19:03:21,270 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 18 treesize of output 20 [2021-12-06 19:03:22,123 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:22,133 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:22,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:22,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 74 treesize of output 64 [2021-12-06 19:03:22,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:22,861 INFO L354 Elim1Store]: treesize reduction 63, result has 41.7 percent of original size [2021-12-06 19:03:22,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 85 [2021-12-06 19:03:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:22,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 28 [2021-12-06 19:03:22,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:22,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 54 [2021-12-06 19:03:23,553 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:23,561 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:23,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,717 INFO L354 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2021-12-06 19:03:23,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 278 treesize of output 214 [2021-12-06 19:03:23,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,735 INFO L354 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2021-12-06 19:03:23,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 301 treesize of output 258 [2021-12-06 19:03:23,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,780 INFO L354 Elim1Store]: treesize reduction 4, result has 92.0 percent of original size [2021-12-06 19:03:23,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 72 [2021-12-06 19:03:23,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:23,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 116 [2021-12-06 19:03:28,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:03:28,096 INFO L354 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2021-12-06 19:03:28,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 344 treesize of output 127 [2021-12-06 19:03:28,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 30 [2021-12-06 19:03:28,877 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:03:28,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:03:33,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:33,551 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 216 [2021-12-06 19:03:33,560 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:33,560 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 213 [2021-12-06 19:03:34,354 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_50 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_51 (Array (_ BitVec 32) (_ BitVec 32))) (v_~head~0.base_192 (_ BitVec 32))) (let ((.cse5 (store |c_#memory_$Pointer$.base| v_~head~0.base_192 v_arrayElimArr_50)) (.cse7 (store |c_#memory_$Pointer$.offset| v_~head~0.base_192 v_arrayElimArr_51)) (.cse9 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse8 (select (select .cse7 c_~head~0.base) .cse9)) (.cse4 (store |c_#length| v_~head~0.base_192 (_ bv8 32))) (.cse6 (select (select .cse5 c_~head~0.base) .cse9))) (let ((.cse1 (select .cse4 .cse6)) (.cse0 (bvadd .cse8 (_ bv4 32)))) (or (not (= (select v_arrayElimArr_51 (_ bv4 32)) c_~head~0.offset)) (not (bvule .cse0 .cse1)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_~head~0.base_192)))) (let ((.cse2 (select (select .cse7 .cse6) .cse0))) (let ((.cse3 (bvadd (_ bv4 32) .cse2))) (and (bvule .cse2 .cse3) (bvule .cse3 (select .cse4 (select (select .cse5 .cse6) .cse0)))))) (not (bvule (bvadd .cse8 (_ bv8 32)) .cse1)) (not (bvule .cse8 .cse0)) (not (= (select v_arrayElimArr_50 (_ bv4 32)) c_~head~0.base))))))) is different from false [2021-12-06 19:03:34,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [369149597] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:03:34,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:03:34,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 46 [2021-12-06 19:03:34,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153698027] [2021-12-06 19:03:34,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:03:34,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-06 19:03:34,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:03:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-06 19:03:34,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=3533, Unknown=19, NotChecked=242, Total=4032 [2021-12-06 19:03:34,363 INFO L87 Difference]: Start difference. First operand 99 states and 106 transitions. Second operand has 47 states, 46 states have (on average 2.130434782608696) internal successors, (98), 42 states have internal predecessors, (98), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 19:03:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:03:42,586 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2021-12-06 19:03:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 19:03:42,587 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.130434782608696) internal successors, (98), 42 states have internal predecessors, (98), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) Word has length 65 [2021-12-06 19:03:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:03:42,588 INFO L225 Difference]: With dead ends: 112 [2021-12-06 19:03:42,588 INFO L226 Difference]: Without dead ends: 112 [2021-12-06 19:03:42,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 111 SyntacticMatches, 10 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=342, Invalid=4462, Unknown=34, NotChecked=274, Total=5112 [2021-12-06 19:03:42,590 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 41 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 546 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:03:42,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 885 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 199 Invalid, 0 Unknown, 546 Unchecked, 0.3s Time] [2021-12-06 19:03:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-06 19:03:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2021-12-06 19:03:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 91 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:03:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2021-12-06 19:03:42,594 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 65 [2021-12-06 19:03:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:03:42,594 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2021-12-06 19:03:42,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.130434782608696) internal successors, (98), 42 states have internal predecessors, (98), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-06 19:03:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2021-12-06 19:03:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 19:03:42,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:03:42,595 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:03:42,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-12-06 19:03:42,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2021-12-06 19:03:42,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 19:03:42,997 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:03:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:03:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash 243815640, now seen corresponding path program 2 times [2021-12-06 19:03:42,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:03:43,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931078173] [2021-12-06 19:03:43,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:03:43,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:03:43,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:03:43,003 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:03:43,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-12-06 19:03:43,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:03:43,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:03:43,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-06 19:03:43,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:03:43,526 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 [2021-12-06 19:03:43,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-12-06 19:03:43,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:43,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2021-12-06 19:03:43,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:43,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:44,009 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:03:44,009 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 89 treesize of output 77 [2021-12-06 19:03:44,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 13 [2021-12-06 19:03:44,051 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-06 19:03:44,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-12-06 19:03:44,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2021-12-06 19:03:44,480 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:44,488 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:44,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 56 [2021-12-06 19:03:44,784 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 19:03:44,784 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 121 treesize of output 107 [2021-12-06 19:03:44,809 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:03:44,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 102 treesize of output 82 [2021-12-06 19:03:44,829 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-06 19:03:44,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 57 treesize of output 53 [2021-12-06 19:03:44,850 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 18 treesize of output 14 [2021-12-06 19:03:44,864 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 20 treesize of output 16 [2021-12-06 19:03:44,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:44,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 13 [2021-12-06 19:03:45,054 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 196 treesize of output 178 [2021-12-06 19:03:47,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:03:47,998 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-06 19:03:47,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 136 [2021-12-06 19:03:48,020 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-12-06 19:03:48,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 120 [2021-12-06 19:03:48,503 INFO L354 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2021-12-06 19:03:48,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 87 treesize of output 56 [2021-12-06 19:03:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:03:48,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:03:50,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:50,481 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 195 [2021-12-06 19:03:50,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:50,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 188 treesize of output 159 [2021-12-06 19:03:50,521 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:50,521 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 123 [2021-12-06 19:03:50,643 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_198 (_ BitVec 32)) (v_arrayElimArr_58 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_57 (Array (_ BitVec 32) (_ BitVec 8))) (v_arrayElimArr_56 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 8) (select v_arrayElimArr_57 (_ bv1 32)))) (not (= (select v_arrayElimArr_56 (_ bv4 32)) c_~head~0.base)) (not (= (_ bv0 8) (select v_arrayElimArr_57 (_ bv2 32)))) (not (= (_ bv0 8) (select v_arrayElimArr_57 (_ bv3 32)))) (not (= (select v_arrayElimArr_57 (_ bv0 32)) (_ bv3 8))) (not (= (_ bv2 32) (let ((.cse2 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse0 (select (store |c_#memory_int| v_~head~0.base_198 v_arrayElimArr_57) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_198 v_arrayElimArr_56) c_~head~0.base) .cse2))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_198 v_arrayElimArr_58) c_~head~0.base) .cse2))) (concat (concat (concat (select .cse0 (bvadd .cse1 (_ bv3 32))) (select .cse0 (bvadd .cse1 (_ bv2 32)))) (select .cse0 (bvadd .cse1 (_ bv1 32)))) (select .cse0 .cse1)))))) (not (= (select v_arrayElimArr_58 (_ bv4 32)) c_~head~0.offset)))) is different from false [2021-12-06 19:03:50,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:03:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931078173] [2021-12-06 19:03:50,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931078173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:03:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2097119112] [2021-12-06 19:03:50,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:03:50,647 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:03:50,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:03:50,648 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:03:50,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-12-06 19:03:51,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:03:51,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:03:51,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 90 conjunts are in the unsatisfiable core [2021-12-06 19:03:51,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:03:51,746 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 [2021-12-06 19:03:51,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-12-06 19:03:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:51,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2021-12-06 19:03:52,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:52,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:03:52,699 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:03:52,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 47 [2021-12-06 19:03:52,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 89 treesize of output 67 [2021-12-06 19:03:53,599 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:53,608 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:03:54,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:54,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 139 treesize of output 111 [2021-12-06 19:03:54,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:54,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 87 [2021-12-06 19:03:54,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:54,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 134 treesize of output 104 [2021-12-06 19:03:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:54,085 INFO L354 Elim1Store]: treesize reduction 4, result has 77.8 percent of original size [2021-12-06 19:03:54,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2021-12-06 19:03:55,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:03:55,676 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 19:03:55,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 92 [2021-12-06 19:03:55,685 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:03:55,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 52 [2021-12-06 19:03:55,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:55,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:55,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:03:55,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:55,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:03:55,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:03:55,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:03:56,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:56,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 60 treesize of output 34 [2021-12-06 19:03:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:03:56,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:03:56,637 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:56,637 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 135 [2021-12-06 19:03:56,643 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:03:56,643 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 123 [2021-12-06 19:03:56,714 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_204 (_ BitVec 32)) (v_arrayElimArr_61 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_62 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4513 (Array (_ BitVec 32) (_ BitVec 8)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_~head~0.base_204)))))) (not (= (let ((.cse2 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse0 (select (store |c_#memory_int| v_~head~0.base_204 v_ArrVal_4513) (select (select (store |c_#memory_$Pointer$.base| v_~head~0.base_204 v_arrayElimArr_61) c_~head~0.base) .cse2))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| v_~head~0.base_204 v_arrayElimArr_62) c_~head~0.base) .cse2))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) .cse1)) (select .cse0 (bvadd (_ bv2 32) .cse1))) (select .cse0 (bvadd .cse1 (_ bv1 32)))) (select .cse0 .cse1)))) (_ bv2 32))) (not (= (select v_arrayElimArr_62 (_ bv4 32)) c_~head~0.offset)) (not (= (select v_arrayElimArr_61 (_ bv4 32)) c_~head~0.base)))) is different from false [2021-12-06 19:03:56,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2097119112] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:03:56,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:03:56,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 44 [2021-12-06 19:03:56,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987132684] [2021-12-06 19:03:56,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:03:56,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 19:03:56,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:03:56,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 19:03:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2370, Unknown=56, NotChecked=198, Total=2756 [2021-12-06 19:03:56,719 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 39 states have internal predecessors, (93), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 19:04:02,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:02,452 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2021-12-06 19:04:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 19:04:02,453 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 39 states have internal predecessors, (93), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 66 [2021-12-06 19:04:02,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:02,454 INFO L225 Difference]: With dead ends: 102 [2021-12-06 19:04:02,454 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 19:04:02,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 131 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=294, Invalid=4323, Unknown=83, NotChecked=270, Total=4970 [2021-12-06 19:04:02,455 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 18 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:02,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1022 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 334 Invalid, 0 Unknown, 410 Unchecked, 0.5s Time] [2021-12-06 19:04:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 19:04:02,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2021-12-06 19:04:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 19:04:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2021-12-06 19:04:02,458 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 66 [2021-12-06 19:04:02,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:02,458 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2021-12-06 19:04:02,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 39 states have internal predecessors, (93), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 19:04:02,459 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2021-12-06 19:04:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:04:02,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:02,459 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:02,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-12-06 19:04:02,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-12-06 19:04:02,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:04:02,861 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:04:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1944601247, now seen corresponding path program 2 times [2021-12-06 19:04:02,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:04:02,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120809219] [2021-12-06 19:04:02,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:04:02,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:04:02,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:04:02,866 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:04:02,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-12-06 19:04:03,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:04:03,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:04:03,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 101 conjunts are in the unsatisfiable core [2021-12-06 19:04:03,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:04:03,516 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 [2021-12-06 19:04:03,520 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 [2021-12-06 19:04:03,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:03,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:03,848 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:04:03,849 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 18 treesize of output 30 [2021-12-06 19:04:03,869 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:04:03,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 45 [2021-12-06 19:04:04,298 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:04,307 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:04,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:04,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 54 treesize of output 44 [2021-12-06 19:04:04,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:04,561 INFO L354 Elim1Store]: treesize reduction 45, result has 42.3 percent of original size [2021-12-06 19:04:04,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 69 [2021-12-06 19:04:04,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-06 19:04:04,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:04,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:04:05,057 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:05,071 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:05,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,336 INFO L354 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2021-12-06 19:04:05,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 128 treesize of output 88 [2021-12-06 19:04:05,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,376 INFO L354 Elim1Store]: treesize reduction 4, result has 81.8 percent of original size [2021-12-06 19:04:05,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 52 [2021-12-06 19:04:05,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-12-06 19:04:05,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:05,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-12-06 19:04:07,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:04:07,597 INFO L354 Elim1Store]: treesize reduction 79, result has 19.4 percent of original size [2021-12-06 19:04:07,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 187 treesize of output 101 [2021-12-06 19:04:07,632 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 19:04:07,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 29 [2021-12-06 19:04:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 17 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:04:08,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:04:10,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:04:10,046 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 154 [2021-12-06 19:04:10,053 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:04:10,053 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 133 [2021-12-06 19:04:10,325 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_~head~0.base_210 (_ BitVec 32)) (v_arrayElimArr_67 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_68 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select v_arrayElimArr_67 (_ bv4 32)) c_~head~0.base)) (let ((.cse5 (store |c_#memory_$Pointer$.offset| v_~head~0.base_210 v_arrayElimArr_68)) (.cse1 (store |c_#memory_$Pointer$.base| v_~head~0.base_210 v_arrayElimArr_67)) (.cse6 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse2 (select (select .cse1 c_~head~0.base) .cse6)) (.cse3 (bvadd (_ bv4 32) (select (select .cse5 c_~head~0.base) .cse6)))) (let ((.cse4 (select (select .cse5 .cse2) .cse3))) (let ((.cse0 (bvadd (_ bv8 32) .cse4))) (and (bvule .cse0 (select (store |c_#length| v_~head~0.base_210 (_ bv8 32)) (select (select .cse1 .cse2) .cse3))) (bvule (bvadd (_ bv4 32) .cse4) .cse0)))))) (not (= (select v_arrayElimArr_68 (_ bv4 32)) c_~head~0.offset)) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| v_~head~0.base_210)))))))) is different from false [2021-12-06 19:04:10,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:04:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120809219] [2021-12-06 19:04:10,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120809219] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:04:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1747645539] [2021-12-06 19:04:10,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:04:10,331 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:04:10,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:04:10,332 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:04:10,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2021-12-06 19:04:11,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:04:11,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:04:11,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 128 conjunts are in the unsatisfiable core [2021-12-06 19:04:11,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:04:11,175 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 [2021-12-06 19:04:11,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2021-12-06 19:04:11,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:11,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 60 [2021-12-06 19:04:12,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:12,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:12,899 INFO L354 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2021-12-06 19:04:12,899 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 59 treesize of output 47 [2021-12-06 19:04:12,940 INFO L354 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2021-12-06 19:04:12,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 46 [2021-12-06 19:04:13,365 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 [2021-12-06 19:04:14,037 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:14,047 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:14,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:14,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 103 treesize of output 75 [2021-12-06 19:04:14,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:14,609 INFO L354 Elim1Store]: treesize reduction 45, result has 42.3 percent of original size [2021-12-06 19:04:14,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 71 [2021-12-06 19:04:14,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 41 [2021-12-06 19:04:14,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:14,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 22 [2021-12-06 19:04:15,915 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:15,924 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:16,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,544 INFO L354 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2021-12-06 19:04:16,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 117 [2021-12-06 19:04:16,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,586 INFO L354 Elim1Store]: treesize reduction 4, result has 81.8 percent of original size [2021-12-06 19:04:16,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 57 [2021-12-06 19:04:16,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 45 [2021-12-06 19:04:16,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-12-06 19:04:16,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:16,641 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 18 treesize of output 20 [2021-12-06 19:04:20,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:04:20,541 INFO L354 Elim1Store]: treesize reduction 79, result has 19.4 percent of original size [2021-12-06 19:04:20,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 316 treesize of output 158 [2021-12-06 19:04:20,575 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 19:04:20,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 43 [2021-12-06 19:04:21,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:21,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:21,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:21,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:21,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:21,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:04:21,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:21,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:04:21,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:21,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:04:21,567 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:04:21,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 60 treesize of output 34 [2021-12-06 19:04:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:22,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:04:31,606 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:04:31,606 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 564 treesize of output 513 [2021-12-06 19:04:31,631 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:04:31,631 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 537 treesize of output 474 [2021-12-06 19:04:33,401 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_73 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_74 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4887 (Array (_ BitVec 32) (_ BitVec 8))) (v_~head~0.base_216 (_ BitVec 32))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| v_~head~0.base_216 v_arrayElimArr_74)) (.cse11 (bvadd (_ bv4 32) c_~head~0.offset))) (let ((.cse10 (store |c_#memory_$Pointer$.base| v_~head~0.base_216 v_arrayElimArr_73)) (.cse0 (select (select .cse8 c_~head~0.base) .cse11))) (let ((.cse2 (bvadd (_ bv4 32) .cse0)) (.cse7 (store |c_#length| v_~head~0.base_216 (_ bv8 32))) (.cse9 (select (select .cse10 c_~head~0.base) .cse11))) (let ((.cse1 (select .cse7 .cse9)) (.cse5 (select (select .cse10 .cse9) .cse2)) (.cse4 (select (select .cse8 .cse9) .cse2))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_~head~0.base_216))))) (not (bvule (bvadd (_ bv8 32) .cse0) .cse1)) (not (bvule .cse2 .cse1)) (not (= c_~head~0.offset (select v_arrayElimArr_74 (_ bv4 32)))) (= (_ bv2 32) (let ((.cse3 (select (store |c_#memory_int| v_~head~0.base_216 v_ArrVal_4887) .cse5))) (concat (concat (concat (select .cse3 (bvadd (_ bv3 32) .cse4)) (select .cse3 (bvadd (_ bv2 32) .cse4))) (select .cse3 (bvadd (_ bv1 32) .cse4))) (select .cse3 .cse4)))) (let ((.cse6 (bvadd (_ bv8 32) .cse4))) (and (bvule .cse6 (select .cse7 .cse5)) (bvule (bvadd (_ bv4 32) .cse4) .cse6))) (not (bvule .cse0 .cse2)) (not (= (select v_arrayElimArr_73 (_ bv4 32)) c_~head~0.base)) (not (bvule (bvadd (_ bv8 32) c_~head~0.offset) (select .cse7 c_~head~0.base))))))))) is different from false [2021-12-06 19:04:33,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1747645539] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:04:33,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:04:33,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 34] total 59 [2021-12-06 19:04:33,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813692818] [2021-12-06 19:04:33,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:04:33,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-12-06 19:04:33,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:04:33,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-12-06 19:04:33,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=5699, Unknown=52, NotChecked=306, Total=6320 [2021-12-06 19:04:33,410 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 59 states, 59 states have (on average 2.0) internal successors, (118), 52 states have internal predecessors, (118), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 19:04:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:04:42,223 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2021-12-06 19:04:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 19:04:42,223 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0) internal successors, (118), 52 states have internal predecessors, (118), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-12-06 19:04:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:04:42,224 INFO L225 Difference]: With dead ends: 161 [2021-12-06 19:04:42,224 INFO L226 Difference]: Without dead ends: 161 [2021-12-06 19:04:42,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 114 SyntacticMatches, 5 SemanticMatches, 105 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=529, Invalid=10312, Unknown=87, NotChecked=414, Total=11342 [2021-12-06 19:04:42,225 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 25 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 958 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:04:42,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1697 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 358 Invalid, 0 Unknown, 958 Unchecked, 0.6s Time] [2021-12-06 19:04:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-12-06 19:04:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 154. [2021-12-06 19:04:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 140 states have internal predecessors, (147), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 19:04:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 162 transitions. [2021-12-06 19:04:42,229 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 162 transitions. Word has length 68 [2021-12-06 19:04:42,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:04:42,229 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 162 transitions. [2021-12-06 19:04:42,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.0) internal successors, (118), 52 states have internal predecessors, (118), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 19:04:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 162 transitions. [2021-12-06 19:04:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:04:42,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:04:42,230 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:04:42,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2021-12-06 19:04:42,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-12-06 19:04:42,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:04:42,632 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:04:42,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:04:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1950426188, now seen corresponding path program 3 times [2021-12-06 19:04:42,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:04:42,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032394242] [2021-12-06 19:04:42,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:04:42,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:04:42,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:04:42,636 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:04:42,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-12-06 19:04:43,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:04:43,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:04:43,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 19:04:43,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:04:43,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:43,843 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:43,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:43,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:43,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 27 treesize of output 29 [2021-12-06 19:04:44,008 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-06 19:04:44,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 19:04:44,314 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:44,323 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:44,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:44,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 44 treesize of output 40 [2021-12-06 19:04:44,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:44,525 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 19:04:44,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 55 [2021-12-06 19:04:44,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:44,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2021-12-06 19:04:44,544 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 18 treesize of output 4 [2021-12-06 19:04:45,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:45,528 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 19:04:45,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 72 [2021-12-06 19:04:45,947 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-06 19:04:45,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 39 [2021-12-06 19:04:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:46,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:04:47,481 INFO L354 Elim1Store]: treesize reduction 5, result has 80.8 percent of original size [2021-12-06 19:04:47,481 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 32 treesize of output 31 [2021-12-06 19:04:48,670 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:04:48,670 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 74 [2021-12-06 19:04:48,677 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:04:48,677 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 68 [2021-12-06 19:04:48,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:04:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032394242] [2021-12-06 19:04:48,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032394242] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:04:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [719695422] [2021-12-06 19:04:48,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:04:48,940 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-06 19:04:48,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 [2021-12-06 19:04:48,941 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-06 19:04:48,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2021-12-06 19:04:50,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:04:50,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:04:50,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-06 19:04:50,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:04:50,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:51,930 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:51,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-06 19:04:52,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:52,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-06 19:04:52,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:52,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-06 19:04:52,482 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-06 19:04:52,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 19:04:53,541 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:53,557 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-12-06 19:04:54,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:54,100 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 19:04:54,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 52 [2021-12-06 19:04:54,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:54,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-12-06 19:04:54,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:54,135 INFO L354 Elim1Store]: treesize reduction 31, result has 48.3 percent of original size [2021-12-06 19:04:54,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 52 [2021-12-06 19:04:54,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:04:54,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-06 19:04:56,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:04:56,906 INFO L354 Elim1Store]: treesize reduction 79, result has 19.4 percent of original size [2021-12-06 19:04:56,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 183 treesize of output 111 [2021-12-06 19:04:56,939 INFO L354 Elim1Store]: treesize reduction 9, result has 57.1 percent of original size [2021-12-06 19:04:56,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 38 [2021-12-06 19:04:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 34 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:04:59,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:05:04,626 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:05:04,627 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 142 [2021-12-06 19:05:04,647 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:05:04,647 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 151 [2021-12-06 19:05:05,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [719695422] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:05:05,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:05:05,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 29] total 63 [2021-12-06 19:05:05,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307599384] [2021-12-06 19:05:05,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:05:05,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-12-06 19:05:05,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:05:05,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-12-06 19:05:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=7152, Unknown=35, NotChecked=0, Total=7656 [2021-12-06 19:05:05,605 INFO L87 Difference]: Start difference. First operand 154 states and 162 transitions. Second operand has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 55 states have internal predecessors, (118), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 19:05:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:05:15,142 INFO L93 Difference]: Finished difference Result 157 states and 163 transitions. [2021-12-06 19:05:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 19:05:15,143 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 55 states have internal predecessors, (118), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-12-06 19:05:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:05:15,144 INFO L225 Difference]: With dead ends: 157 [2021-12-06 19:05:15,144 INFO L226 Difference]: Without dead ends: 157 [2021-12-06 19:05:15,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3888 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=785, Invalid=10284, Unknown=61, NotChecked=0, Total=11130 [2021-12-06 19:05:15,145 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 20 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 279 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:05:15,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 967 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 338 Invalid, 0 Unknown, 279 Unchecked, 0.6s Time] [2021-12-06 19:05:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-06 19:05:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2021-12-06 19:05:15,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 130 states have (on average 1.1153846153846154) internal successors, (145), 140 states have internal predecessors, (145), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 19:05:15,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 160 transitions. [2021-12-06 19:05:15,150 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 160 transitions. Word has length 68 [2021-12-06 19:05:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:05:15,150 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 160 transitions. [2021-12-06 19:05:15,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.873015873015873) internal successors, (118), 55 states have internal predecessors, (118), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-06 19:05:15,151 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 160 transitions. [2021-12-06 19:05:15,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 19:05:15,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:05:15,151 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:05:15,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-12-06 19:05:15,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2021-12-06 19:05:15,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/cvc4 --incremental --print-success --lang smt [2021-12-06 19:05:15,553 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [insert_listErr0REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION (and 17 more)] === [2021-12-06 19:05:15,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:05:15,554 INFO L85 PathProgramCache]: Analyzing trace with hash 242750108, now seen corresponding path program 3 times [2021-12-06 19:05:15,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:05:15,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617020112] [2021-12-06 19:05:15,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:05:15,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:05:15,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:05:15,557 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:05:15,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-12-06 19:05:16,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:05:16,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-06 19:05:16,392 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:05:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:05:16,794 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 19:05:16,794 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:05:16,795 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (20 of 21 remaining) [2021-12-06 19:05:16,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr0REQUIRES_VIOLATION (19 of 21 remaining) [2021-12-06 19:05:16,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr1REQUIRES_VIOLATION (18 of 21 remaining) [2021-12-06 19:05:16,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr2REQUIRES_VIOLATION (17 of 21 remaining) [2021-12-06 19:05:16,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr3REQUIRES_VIOLATION (16 of 21 remaining) [2021-12-06 19:05:16,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr4REQUIRES_VIOLATION (15 of 21 remaining) [2021-12-06 19:05:16,796 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr5REQUIRES_VIOLATION (14 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr6REQUIRES_VIOLATION (13 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location insert_listErr7REQUIRES_VIOLATION (12 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (11 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (10 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (9 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (8 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (7 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (6 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (5 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (4 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (3 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (2 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (1 of 21 remaining) [2021-12-06 19:05:16,797 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining) [2021-12-06 19:05:16,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-12-06 19:05:16,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:05:17,004 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:05:17,007 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:05:17,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:05:17 BoogieIcfgContainer [2021-12-06 19:05:17,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:05:17,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:05:17,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:05:17,052 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:05:17,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:01:48" (3/4) ... [2021-12-06 19:05:17,053 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 19:05:17,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:05:17,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:05:17,093 INFO L158 Benchmark]: Toolchain (without parser) took 209098.63ms. Allocated memory was 56.6MB in the beginning and 102.8MB in the end (delta: 46.1MB). Free memory was 33.9MB in the beginning and 35.9MB in the end (delta: -2.0MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2021-12-06 19:05:17,093 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:05:17,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.38ms. Allocated memory was 56.6MB in the beginning and 102.8MB in the end (delta: 46.1MB). Free memory was 33.8MB in the beginning and 74.4MB in the end (delta: -40.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 19:05:17,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.23ms. Allocated memory is still 102.8MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:05:17,094 INFO L158 Benchmark]: Boogie Preprocessor took 31.47ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 70.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:05:17,094 INFO L158 Benchmark]: RCFGBuilder took 406.77ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 55.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 19:05:17,094 INFO L158 Benchmark]: TraceAbstraction took 208174.45ms. Allocated memory is still 102.8MB. Free memory was 55.0MB in the beginning and 41.5MB in the end (delta: 13.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-12-06 19:05:17,094 INFO L158 Benchmark]: Witness Printer took 41.48ms. Allocated memory is still 102.8MB. Free memory was 41.5MB in the beginning and 35.9MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 19:05:17,095 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 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.38ms. Allocated memory was 56.6MB in the beginning and 102.8MB in the end (delta: 46.1MB). Free memory was 33.8MB in the beginning and 74.4MB in the end (delta: -40.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.23ms. Allocated memory is still 102.8MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.47ms. Allocated memory is still 102.8MB. Free memory was 72.3MB in the beginning and 70.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 406.77ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 55.5MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 208174.45ms. Allocated memory is still 102.8MB. Free memory was 55.0MB in the beginning and 41.5MB in the end (delta: 13.5MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Witness Printer took 41.48ms. Allocated memory is still 102.8MB. Free memory was 41.5MB in the beginning and 35.9MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L533] mlist *head; VAL [head={0:0}] [L554] int i; [L555] mlist *mylist, *temp; VAL [head={0:0}] [L556] CALL insert_list(mylist,2) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, l={7:10}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, k=2, l={6:0}, l={7:10}] [L544] COND TRUE head==((void *)0) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, k=2, l={7:10}, l={6:0}] [L545] l->next = ((void *)0) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, k=2, l={7:10}, l={6:0}] [L550] head = l [L551] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=2, \result=0, head={6:0}, k=2, l={6:0}, l={7:10}] [L556] RET insert_list(mylist,2) VAL [head={6:0}, insert_list(mylist,2)=0, mylist={7:10}] [L557] CALL insert_list(mylist,5) VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={6:0}, l={7:10}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={6:0}, k=5, l={7:10}, l={9:0}] [L544] COND FALSE !(head==((void *)0)) VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={6:0}, k=5, l={7:10}, l={9:0}] [L547] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={6:0}, k=5, l={7:10}, l={9:0}] [L548] l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={6:0}, k=5, l={7:10}, l={9:0}] [L550] head = l [L551] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=5, \result=0, head={9:0}, k=5, l={9:0}, l={7:10}] [L557] RET insert_list(mylist,5) VAL [head={9:0}, insert_list(mylist,5)=0, mylist={7:10}] [L558] CALL insert_list(mylist,1) VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={9:0}, l={7:10}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={9:0}, k=1, l={13:0}, l={7:10}] [L544] COND FALSE !(head==((void *)0)) VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={9:0}, k=1, l={13:0}, l={7:10}] [L547] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={9:0}, k=1, l={7:10}, l={13:0}] [L548] l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={9:0}, k=1, l={13:0}, l={7:10}] [L550] head = l [L551] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=1, \result=0, head={13:0}, k=1, l={7:10}, l={13:0}] [L558] RET insert_list(mylist,1) VAL [head={13:0}, insert_list(mylist,1)=0, mylist={7:10}] [L559] CALL insert_list(mylist,3) VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={13:0}, l={7:10}] [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={13:0}, k=3, l={7:10}, l={-2147483639:0}] [L544] COND FALSE !(head==((void *)0)) VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={13:0}, k=3, l={7:10}, l={-2147483639:0}] [L547] l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={13:0}, k=3, l={7:10}, l={-2147483639:0}] [L548] l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={13:0}, k=3, l={-2147483639:0}, l={7:10}] [L550] head = l [L551] return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=3, \result=0, head={-2147483639:0}, k=3, l={-2147483639:0}, l={7:10}] [L559] RET insert_list(mylist,3) VAL [head={-2147483639:0}, insert_list(mylist,3)=0, mylist={7:10}] [L560] CALL, EXPR search_list(head,2) [L535] l = head VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={-2147483639:0}] [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={-2147483639:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={-2147483639:0}, l!=((void *)0) && l->key!=k=1, l->key=3] [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={-2147483639:0}, l!=((void *)0) && l->key!=k=1, l->key=3] [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={-2147483639:0}, l->next={13:0}] [L537] l = l->next [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={13:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(k)=2, head={-2147483639:0}, k=2, l={13:0}, l={-2147483639:0}, l!=((void *)0) && l->key!=k=1, l->key=1] [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={13:0}, l!=((void *)0) && l->key!=k=1, l->key=1] [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next VAL [\old(k)=2, head={-2147483639:0}, k=2, l={13:0}, l={-2147483639:0}, l->next={9:0}] [L537] l = l->next [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={9:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={9:0}, l!=((void *)0) && l->key!=k=1, l->key=5] [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={-2147483639:0}, l={9:0}, l!=((void *)0) && l->key!=k=1, l->key=5] [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next VAL [\old(k)=2, head={-2147483639:0}, k=2, l={9:0}, l={-2147483639:0}, l->next={6:0}] [L537] l = l->next [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={6:0}, l={-2147483639:0}, l!=((void *)0) && l->key!=k=1] [L536] EXPR l->key VAL [\old(k)=2, head={-2147483639:0}, k=2, l={6:0}, l={-2147483639:0}, l!=((void *)0) && l->key!=k=1, l->key=2] [L536] l!=((void *)0) && l->key!=k VAL [\old(k)=2, head={-2147483639:0}, k=2, l={6:0}, l={-2147483639:0}, l!=((void *)0) && l->key!=k=0, l->key=2] [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; VAL [\old(k)=2, \result={6:0}, head={-2147483639:0}, k=2, l={-2147483639:0}, l={6:0}] [L560] RET, EXPR search_list(head,2) [L560] temp = search_list(head,2) [L561] EXPR temp->key VAL [head={-2147483639:0}, mylist={7:10}, temp={6:0}, temp->key=2] [L561] CALL __VERIFIER_assert(temp->key==1) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, head={-2147483639:0}] [L15] reach_error() VAL [\old(cond)=0, cond=0, head={-2147483639:0}] - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 561]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 63 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 208.1s, OverallIterations: 25, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 47.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2080 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2080 mSDsluCounter, 11510 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4107 IncrementalHoareTripleChecker+Unchecked, 10448 mSDsCounter, 319 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4749 IncrementalHoareTripleChecker+Invalid, 9175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 319 mSolverCounterUnsat, 1062 mSDtfsCounter, 4749 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2822 GetRequests, 1911 SyntacticMatches, 56 SemanticMatches, 855 ConstructedPredicates, 16 IntricatePredicates, 4 DeprecatedPredicates, 13833 ImplicationChecksByTransitivity, 112.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=23, InterpolantAutomatonStates: 399, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 409 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 14.6s SatisfiabilityAnalysisTime, 133.7s InterpolantComputationTime, 1989 NumberOfCodeBlocks, 1989 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 2079 ConstructedInterpolants, 627 QuantifiedInterpolants, 74487 SizeOfPredicates, 526 NumberOfNonLiveVariables, 13090 ConjunctsInSsa, 1711 ConjunctsInUnsatCore, 39 InterpolantComputations, 9 PerfectInterpolantSequences, 1172/2015 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 19:05:17,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a1df3-509f-4285-9ab8-b076e2b6ac3d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)