./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:16:04,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:16:04,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:16:04,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:16:04,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:16:04,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:16:04,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:16:04,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:16:04,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:16:04,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:16:04,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:16:04,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:16:04,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:16:04,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:16:04,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:16:04,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:16:04,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:16:04,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:16:04,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:16:04,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:16:04,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:16:04,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:16:04,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:16:04,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:16:04,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:16:04,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:16:04,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:16:04,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:16:04,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:16:04,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:16:04,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:16:04,898 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:16:04,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:16:04,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:16:04,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:16:04,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:16:04,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:16:04,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:16:04,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:16:04,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:16:04,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:16:04,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:16:04,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:16:04,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:16:04,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:16:04,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:16:04,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:16:04,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:16:04,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:16:04,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:16:04,941 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:16:04,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:16:04,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:16:04,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:16:04,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:16:04,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:16:04,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:16:04,944 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:16:04,944 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:16:04,945 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:16:04,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:16:04,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:16:04,946 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:16:04,946 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:16:04,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:16:04,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:16:04,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:16:04,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:16:04,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:16:04,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:16:04,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:16:04,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:16:04,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:16:04,950 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_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-11-20 07:16:05,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:16:05,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:16:05,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:16:05,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:16:05,275 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:16:05,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-20 07:16:05,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/45913b7b0/3ac6cf454f4a41e3b0a66fa01371d710/FLAGf8c16fc3a [2021-11-20 07:16:06,032 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:16:06,032 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-20 07:16:06,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/45913b7b0/3ac6cf454f4a41e3b0a66fa01371d710/FLAGf8c16fc3a [2021-11-20 07:16:06,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/45913b7b0/3ac6cf454f4a41e3b0a66fa01371d710 [2021-11-20 07:16:06,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:16:06,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:16:06,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:16:06,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:16:06,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:16:06,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:16:06" (1/1) ... [2021-11-20 07:16:06,348 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2571fe3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:06, skipping insertion in model container [2021-11-20 07:16:06,348 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:16:06" (1/1) ... [2021-11-20 07:16:06,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:16:06,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:16:07,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:16:07,067 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 07:16:07,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50242ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:07, skipping insertion in model container [2021-11-20 07:16:07,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:16:07,068 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 07:16:07,072 INFO L158 Benchmark]: Toolchain (without parser) took 742.15ms. Allocated memory is still 115.3MB. Free memory was 80.2MB in the beginning and 87.5MB in the end (delta: -7.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:16:07,074 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 77.6MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:16:07,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 726.31ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 87.5MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:16:07,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 77.6MB. Free memory was 54.2MB in the beginning and 54.2MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 726.31ms. Allocated memory is still 115.3MB. Free memory was 79.9MB in the beginning and 87.5MB in the end (delta: -7.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:16:09,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:16:09,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:16:09,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:16:09,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:16:09,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:16:09,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:16:09,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:16:09,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:16:09,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:16:09,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:16:09,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:16:09,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:16:09,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:16:09,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:16:09,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:16:09,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:16:09,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:16:09,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:16:09,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:16:09,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:16:09,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:16:09,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:16:09,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:16:09,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:16:09,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:16:09,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:16:09,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:16:09,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:16:09,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:16:09,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:16:09,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:16:09,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:16:09,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:16:09,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:16:09,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:16:09,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:16:09,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:16:09,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:16:09,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:16:09,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:16:09,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 07:16:09,850 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:16:09,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:16:09,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:16:09,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:16:09,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:16:09,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:16:09,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:16:09,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:16:09,855 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:16:09,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:16:09,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:16:09,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:16:09,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:16:09,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:16:09,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:16:09,858 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:16:09,858 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:16:09,858 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:16:09,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:16:09,859 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:16:09,859 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:16:09,859 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:16:09,859 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:16:09,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:16:09,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:16:09,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:16:09,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:16:09,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:16:09,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:16:09,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:16:09,862 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:16:09,862 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:16:09,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:16:09,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:16:09,863 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_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e94333448b9ec2a5ffed0adee00d968fb025c54e55196475ef51117fcee9fc3a [2021-11-20 07:16:10,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:16:10,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:16:10,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:16:10,324 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:16:10,324 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:16:10,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-20 07:16:10,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/358163918/3eb4f746558d4aa0a4069b1964acc04d/FLAG08d3e4024 [2021-11-20 07:16:11,150 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:16:11,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/sv-benchmarks/c/ldv-memsafety/memleaks_test15-1.i [2021-11-20 07:16:11,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/358163918/3eb4f746558d4aa0a4069b1964acc04d/FLAG08d3e4024 [2021-11-20 07:16:11,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/data/358163918/3eb4f746558d4aa0a4069b1964acc04d [2021-11-20 07:16:11,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:16:11,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:16:11,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:16:11,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:16:11,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:16:11,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:16:11" (1/1) ... [2021-11-20 07:16:11,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0571f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:11, skipping insertion in model container [2021-11-20 07:16:11,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:16:11" (1/1) ... [2021-11-20 07:16:11,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:16:11,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:16:12,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:16:12,034 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:16:12,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:16:12,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:16:12,166 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:16:12,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:16:12,338 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:16:12,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12 WrapperNode [2021-11-20 07:16:12,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:16:12,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:16:12,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:16:12,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:16:12,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,417 INFO L137 Inliner]: procedures = 176, calls = 103, calls flagged for inlining = 31, calls inlined = 14, statements flattened = 170 [2021-11-20 07:16:12,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:16:12,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:16:12,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:16:12,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:16:12,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:16:12,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:16:12,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:16:12,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:16:12,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (1/1) ... [2021-11-20 07:16:12,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:16:12,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:16:12,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:16:12,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:16:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 07:16:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:16:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:16:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:16:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:16:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-20 07:16:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:16:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:16:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:16:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 07:16:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 07:16:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:16:12,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:16:12,807 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:16:12,808 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:16:13,333 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:16:13,342 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:16:13,342 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:16:13,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:16:13 BoogieIcfgContainer [2021-11-20 07:16:13,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:16:13,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:16:13,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:16:13,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:16:13,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:16:11" (1/3) ... [2021-11-20 07:16:13,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1769c4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:16:13, skipping insertion in model container [2021-11-20 07:16:13,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:16:12" (2/3) ... [2021-11-20 07:16:13,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1769c4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:16:13, skipping insertion in model container [2021-11-20 07:16:13,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:16:13" (3/3) ... [2021-11-20 07:16:13,352 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-1.i [2021-11-20 07:16:13,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:16:13,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-11-20 07:16:13,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:16:13,414 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:16:13,414 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-11-20 07:16:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 73 states have (on average 1.821917808219178) internal successors, (133), 123 states have internal predecessors, (133), 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) [2021-11-20 07:16:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:16:13,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:13,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:13,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:16:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:13,446 INFO L85 PathProgramCache]: Analyzing trace with hash -599633160, now seen corresponding path program 1 times [2021-11-20 07:16:13,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:13,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351909279] [2021-11-20 07:16:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:13,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:13,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:13,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:16:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:13,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:16:13,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:13,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:13,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:13,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:13,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351909279] [2021-11-20 07:16:13,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351909279] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:13,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:13,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 07:16:13,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341333016] [2021-11-20 07:16:13,875 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:13,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:16:13,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:13,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:16:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:16:13,923 INFO L87 Difference]: Start difference. First operand has 129 states, 73 states have (on average 1.821917808219178) internal successors, (133), 123 states have internal predecessors, (133), 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 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:16:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:14,099 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-11-20 07:16:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:16:14,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 07:16:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:14,118 INFO L225 Difference]: With dead ends: 129 [2021-11-20 07:16:14,119 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 07:16:14,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:16:14,132 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 128 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:14,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 515 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:16:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 07:16:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-20 07:16:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.8055555555555556) internal successors, (130), 121 states have internal predecessors, (130), 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) [2021-11-20 07:16:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 138 transitions. [2021-11-20 07:16:14,209 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 138 transitions. Word has length 11 [2021-11-20 07:16:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:14,211 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 138 transitions. [2021-11-20 07:16:14,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 07:16:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 138 transitions. [2021-11-20 07:16:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:16:14,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:14,214 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:14,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:14,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:14,427 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:16:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 518474697, now seen corresponding path program 1 times [2021-11-20 07:16:14,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:14,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067493975] [2021-11-20 07:16:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:14,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:14,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:14,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:16:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:14,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:16:14,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:16:14,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:16:14,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:14,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067493975] [2021-11-20 07:16:14,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067493975] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:14,741 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:14,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 07:16:14,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655698327] [2021-11-20 07:16:14,741 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:14,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:16:14,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:16:14,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:16:14,748 INFO L87 Difference]: Start difference. First operand 127 states and 138 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:16:14,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:14,902 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2021-11-20 07:16:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:16:14,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-20 07:16:14,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:14,908 INFO L225 Difference]: With dead ends: 127 [2021-11-20 07:16:14,908 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 07:16:14,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:16:14,910 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 123 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:14,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 474 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:16:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 07:16:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-20 07:16:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.7916666666666667) internal successors, (129), 121 states have internal predecessors, (129), 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) [2021-11-20 07:16:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-11-20 07:16:14,934 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 17 [2021-11-20 07:16:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:14,935 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-11-20 07:16:14,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 07:16:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-11-20 07:16:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 07:16:14,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:14,936 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:14,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:15,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:15,137 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:16:15,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash -222458304, now seen corresponding path program 1 times [2021-11-20 07:16:15,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:15,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040765367] [2021-11-20 07:16:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:15,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:15,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:15,141 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:15,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:16:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:15,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:16:15,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:15,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:16:15,514 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:16:15,514 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 25 treesize of output 32 [2021-11-20 07:16:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:16:15,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:16:28,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:28,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040765367] [2021-11-20 07:16:28,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040765367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:16:28,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:16:28,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-20 07:16:28,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361686409] [2021-11-20 07:16:28,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:16:28,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 07:16:28,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:28,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 07:16:28,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=167, Unknown=6, NotChecked=0, Total=210 [2021-11-20 07:16:28,560 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-20 07:16:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:28,935 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2021-11-20 07:16:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:16:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 10 states have internal predecessors, (25), 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 22 [2021-11-20 07:16:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:28,938 INFO L225 Difference]: With dead ends: 130 [2021-11-20 07:16:28,939 INFO L226 Difference]: Without dead ends: 130 [2021-11-20 07:16:28,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=61, Invalid=239, Unknown=6, NotChecked=0, Total=306 [2021-11-20 07:16:28,941 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 3 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:28,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 682 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 277 Unchecked, 0.3s Time] [2021-11-20 07:16:28,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-20 07:16:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-20 07:16:28,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 75 states have (on average 1.7466666666666666) internal successors, (131), 123 states have internal predecessors, (131), 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) [2021-11-20 07:16:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2021-11-20 07:16:28,953 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 22 [2021-11-20 07:16:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:28,954 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2021-11-20 07:16:28,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-20 07:16:28,955 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2021-11-20 07:16:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 07:16:28,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:28,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:28,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:29,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:29,157 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:16:29,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:29,158 INFO L85 PathProgramCache]: Analyzing trace with hash -222458303, now seen corresponding path program 1 times [2021-11-20 07:16:29,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:29,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327751268] [2021-11-20 07:16:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:29,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:29,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:29,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:29,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:16:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:29,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 07:16:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:29,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:16:29,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:16:31,749 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:16:31,749 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 28 treesize of output 30 [2021-11-20 07:16:31,762 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:16:31,763 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 [2021-11-20 07:16:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:16:31,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:57,366 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 27 treesize of output 25 [2021-11-20 07:16:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:16:57,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:57,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327751268] [2021-11-20 07:16:57,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327751268] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:16:57,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:16:57,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 07:16:57,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436534267] [2021-11-20 07:16:57,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:16:57,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:16:57,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:16:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=192, Unknown=10, NotChecked=0, Total=240 [2021-11-20 07:16:57,397 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-20 07:16:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:58,450 INFO L93 Difference]: Finished difference Result 184 states and 195 transitions. [2021-11-20 07:16:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:16:58,453 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 10 states have internal predecessors, (25), 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 22 [2021-11-20 07:16:58,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:58,455 INFO L225 Difference]: With dead ends: 184 [2021-11-20 07:16:58,455 INFO L226 Difference]: Without dead ends: 184 [2021-11-20 07:16:58,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=50, Invalid=246, Unknown=10, NotChecked=0, Total=306 [2021-11-20 07:16:58,457 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 198 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 443 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:58,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 697 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 292 Invalid, 0 Unknown, 443 Unchecked, 0.9s Time] [2021-11-20 07:16:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-20 07:16:58,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 155. [2021-11-20 07:16:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 105 states have (on average 1.6666666666666667) internal successors, (175), 148 states have internal predecessors, (175), 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) [2021-11-20 07:16:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2021-11-20 07:16:58,470 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 22 [2021-11-20 07:16:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:58,470 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2021-11-20 07:16:58,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 10 states have internal predecessors, (25), 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) [2021-11-20 07:16:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2021-11-20 07:16:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:16:58,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:58,472 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:58,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:58,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:58,683 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:16:58,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash -126280059, now seen corresponding path program 1 times [2021-11-20 07:16:58,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:58,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064041843] [2021-11-20 07:16:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:58,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:58,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:58,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:58,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:16:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:58,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:16:58,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:58,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:16:58,929 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 24 treesize of output 20 [2021-11-20 07:16:58,986 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 27 treesize of output 15 [2021-11-20 07:16:59,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:16:59,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:16:59,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:59,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064041843] [2021-11-20 07:16:59,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064041843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:59,225 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:59,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 07:16:59,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66801953] [2021-11-20 07:16:59,226 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:59,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:16:59,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:16:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:16:59,227 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:17:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:00,055 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2021-11-20 07:17:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:17:00,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-20 07:17:00,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:00,057 INFO L225 Difference]: With dead ends: 155 [2021-11-20 07:17:00,057 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 07:17:00,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:17:00,059 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 10 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:00,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 494 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:17:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 07:17:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-11-20 07:17:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 105 states have (on average 1.6571428571428573) internal successors, (174), 147 states have internal predecessors, (174), 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) [2021-11-20 07:17:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 182 transitions. [2021-11-20 07:17:00,084 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 182 transitions. Word has length 27 [2021-11-20 07:17:00,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:00,084 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 182 transitions. [2021-11-20 07:17:00,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:17:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 182 transitions. [2021-11-20 07:17:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:17:00,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:00,086 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:00,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:00,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:00,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:17:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash -126280058, now seen corresponding path program 1 times [2021-11-20 07:17:00,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:00,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999002320] [2021-11-20 07:17:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:00,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:00,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:00,308 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:00,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:17:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:00,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 07:17:00,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:00,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:17:00,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:17:00,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 07:17:00,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 07:17:00,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-20 07:17:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:17:00,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:17:01,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999002320] [2021-11-20 07:17:01,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999002320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:01,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:01,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 07:17:01,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138250454] [2021-11-20 07:17:01,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:01,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:17:01,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:17:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:17:01,561 INFO L87 Difference]: Start difference. First operand 154 states and 182 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 07:17:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:03,755 INFO L93 Difference]: Finished difference Result 163 states and 189 transitions. [2021-11-20 07:17:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:17:03,756 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2021-11-20 07:17:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:03,757 INFO L225 Difference]: With dead ends: 163 [2021-11-20 07:17:03,758 INFO L226 Difference]: Without dead ends: 163 [2021-11-20 07:17:03,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:17:03,759 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 18 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:03,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 780 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 07:17:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-20 07:17:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 153. [2021-11-20 07:17:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 105 states have (on average 1.6476190476190475) internal successors, (173), 146 states have internal predecessors, (173), 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) [2021-11-20 07:17:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2021-11-20 07:17:03,768 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 27 [2021-11-20 07:17:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:03,769 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2021-11-20 07:17:03,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 07:17:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2021-11-20 07:17:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 07:17:03,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:03,771 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:03,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-20 07:17:03,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:03,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:17:03,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -126277696, now seen corresponding path program 1 times [2021-11-20 07:17:03,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:03,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293180872] [2021-11-20 07:17:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:03,977 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:03,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:03,978 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:03,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:17:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:04,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:17:04,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:04,158 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 18 treesize of output 14 [2021-11-20 07:17:04,194 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 20 treesize of output 8 [2021-11-20 07:17:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:17:04,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:17:04,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293180872] [2021-11-20 07:17:04,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293180872] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:04,338 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:04,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-20 07:17:04,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179649473] [2021-11-20 07:17:04,339 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:04,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:17:04,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:17:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:17:04,340 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:17:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:04,649 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2021-11-20 07:17:04,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:17:04,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-20 07:17:04,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:04,651 INFO L225 Difference]: With dead ends: 150 [2021-11-20 07:17:04,652 INFO L226 Difference]: Without dead ends: 150 [2021-11-20 07:17:04,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:17:04,653 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 5 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:04,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 701 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:17:04,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-20 07:17:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-11-20 07:17:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 143 states have internal predecessors, (168), 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) [2021-11-20 07:17:04,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2021-11-20 07:17:04,661 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 27 [2021-11-20 07:17:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:04,662 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2021-11-20 07:17:04,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:17:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2021-11-20 07:17:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 07:17:04,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:04,664 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:04,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:04,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:04,878 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:17:04,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:04,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1096052090, now seen corresponding path program 1 times [2021-11-20 07:17:04,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:04,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894368764] [2021-11-20 07:17:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:04,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:04,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:04,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:04,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:17:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:05,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 07:17:05,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:05,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:17:05,220 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:17:05,220 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 25 treesize of output 32 [2021-11-20 07:17:05,454 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 07:17:05,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2021-11-20 07:17:05,552 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 23 treesize of output 19 [2021-11-20 07:17:05,746 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 11 [2021-11-20 07:17:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:17:05,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:30,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:17:30,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894368764] [2021-11-20 07:17:30,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894368764] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:17:30,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:17:30,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-11-20 07:17:30,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595936296] [2021-11-20 07:17:30,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:30,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 07:17:30,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:17:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 07:17:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=304, Unknown=11, NotChecked=0, Total=380 [2021-11-20 07:17:30,965 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 15 states have internal predecessors, (44), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:17:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:31,331 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2021-11-20 07:17:31,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 07:17:31,332 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 15 states have internal predecessors, (44), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2021-11-20 07:17:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:31,334 INFO L225 Difference]: With dead ends: 153 [2021-11-20 07:17:31,334 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 07:17:31,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=92, Invalid=403, Unknown=11, NotChecked=0, Total=506 [2021-11-20 07:17:31,335 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 12 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:31,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 631 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 249 Unchecked, 0.3s Time] [2021-11-20 07:17:31,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 07:17:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-11-20 07:17:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 105 states have (on average 1.619047619047619) internal successors, (170), 145 states have internal predecessors, (170), 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) [2021-11-20 07:17:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 178 transitions. [2021-11-20 07:17:31,342 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 178 transitions. Word has length 29 [2021-11-20 07:17:31,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:31,343 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 178 transitions. [2021-11-20 07:17:31,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 15 states have internal predecessors, (44), 4 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:17:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 178 transitions. [2021-11-20 07:17:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 07:17:31,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:31,345 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:31,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:31,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:17:31,563 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:17:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1096052089, now seen corresponding path program 1 times [2021-11-20 07:17:31,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:17:31,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323729109] [2021-11-20 07:17:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:31,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:17:31,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:17:31,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:17:31,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:17:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:31,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 07:17:31,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:31,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:17:31,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:17:32,103 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:17:32,104 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 36 treesize of output 38 [2021-11-20 07:17:32,137 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:17:32,138 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 37 [2021-11-20 07:17:34,479 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:17:34,479 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 44 treesize of output 46 [2021-11-20 07:17:34,516 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 07:17:34,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-11-20 07:17:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:17:34,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:17,049 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_81| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_86| (_ BitVec 32))) (or (exists ((|v_ldv_zalloc_#t~malloc13#1.base_81| (_ BitVec 32)) (|v_ldv_zalloc_#t~malloc13#1.base_85| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_85| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_81|))))) (= (_ bv0 1) (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#t~malloc13#1.base_85|))) (or (exists ((|v_ldv_zalloc_~size#1_79| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_83| (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_old(#length)| |v_ldv_zalloc_#t~malloc13#1.base_85| |v_ldv_zalloc_~size#1_83|) |v_ldv_zalloc_#t~malloc13#1.base_81| |v_ldv_zalloc_~size#1_79|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_8|)))) (not (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_86|))) (and (forall ((|v_ldv_zalloc_~size#1_79| (_ BitVec 32)) (|v_ldv_zalloc_~size#1_84| (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)) (select (store (store |c_#length| |v_ldv_zalloc_#t~malloc13#1.base_86| |v_ldv_zalloc_~size#1_84|) |v_ldv_zalloc_#t~malloc13#1.base_81| |v_ldv_zalloc_~size#1_79|) |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_8|))) (bvule (bvadd (_ bv8 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4|) (bvadd |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_4| (_ bv12 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ldv_zalloc_#t~malloc13#1.base_86| (_ bv1 1)) |v_ldv_zalloc_#t~malloc13#1.base_81|)))))))) is different from false [2021-11-20 07:18:18,576 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:18:18,577 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 67 treesize of output 1 [2021-11-20 07:18:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-20 07:18:18,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:18:18,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323729109] [2021-11-20 07:18:18,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323729109] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:18:18,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:18:18,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-11-20 07:18:18,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117089249] [2021-11-20 07:18:18,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:18:18,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 07:18:18,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:18:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 07:18:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=312, Unknown=13, NotChecked=36, Total=420 [2021-11-20 07:18:18,585 INFO L87 Difference]: Start difference. First operand 153 states and 178 transitions. Second operand has 21 states, 20 states have (on average 2.2) internal successors, (44), 16 states have internal predecessors, (44), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:18:23,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:23,693 INFO L93 Difference]: Finished difference Result 179 states and 188 transitions. [2021-11-20 07:18:23,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:18:23,694 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 16 states have internal predecessors, (44), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2021-11-20 07:18:23,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:23,696 INFO L225 Difference]: With dead ends: 179 [2021-11-20 07:18:23,696 INFO L226 Difference]: Without dead ends: 179 [2021-11-20 07:18:23,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=87, Invalid=410, Unknown=13, NotChecked=42, Total=552 [2021-11-20 07:18:23,698 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 85 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 896 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:23,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 946 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 896 Unchecked, 0.7s Time] [2021-11-20 07:18:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-20 07:18:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 155. [2021-11-20 07:18:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 108 states have (on average 1.6111111111111112) internal successors, (174), 147 states have internal predecessors, (174), 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) [2021-11-20 07:18:23,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2021-11-20 07:18:23,705 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 29 [2021-11-20 07:18:23,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:23,706 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2021-11-20 07:18:23,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.2) internal successors, (44), 16 states have internal predecessors, (44), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:18:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2021-11-20 07:18:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 07:18:23,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:23,708 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:18:23,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:23,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:18:23,922 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:18:23,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1039070521, now seen corresponding path program 1 times [2021-11-20 07:18:23,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:18:23,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717214201] [2021-11-20 07:18:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:23,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:18:23,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:18:23,924 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:18:23,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:18:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:24,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:18:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:18:24,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:18:24,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:18:24,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717214201] [2021-11-20 07:18:24,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717214201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:18:24,150 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:18:24,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 07:18:24,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797391699] [2021-11-20 07:18:24,151 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:18:24,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:18:24,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:18:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:18:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:18:24,152 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:18:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:24,428 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2021-11-20 07:18:24,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:18:24,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-11-20 07:18:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:24,430 INFO L225 Difference]: With dead ends: 171 [2021-11-20 07:18:24,430 INFO L226 Difference]: Without dead ends: 171 [2021-11-20 07:18:24,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:18:24,431 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 109 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:24,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 238 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 07:18:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-20 07:18:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2021-11-20 07:18:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 108 states have (on average 1.6018518518518519) internal successors, (173), 146 states have internal predecessors, (173), 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) [2021-11-20 07:18:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2021-11-20 07:18:24,438 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 31 [2021-11-20 07:18:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:24,438 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2021-11-20 07:18:24,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:18:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2021-11-20 07:18:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 07:18:24,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:24,440 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:18:24,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:24,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:18:24,655 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:18:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1039070520, now seen corresponding path program 1 times [2021-11-20 07:18:24,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:18:24,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64259437] [2021-11-20 07:18:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:24,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:18:24,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:18:24,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:18:24,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:18:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:24,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:18:24,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:18:24,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:25,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 07:18:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:18:25,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:18:25,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64259437] [2021-11-20 07:18:25,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64259437] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:18:25,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:18:25,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-20 07:18:25,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503435064] [2021-11-20 07:18:25,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:18:25,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:18:25,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:18:25,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:18:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:18:25,563 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:18:26,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:26,524 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2021-11-20 07:18:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:18:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 31 [2021-11-20 07:18:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:26,527 INFO L225 Difference]: With dead ends: 176 [2021-11-20 07:18:26,527 INFO L226 Difference]: Without dead ends: 176 [2021-11-20 07:18:26,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:18:26,528 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 362 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:26,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 709 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:18:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-20 07:18:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 149. [2021-11-20 07:18:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 105 states have (on average 1.5809523809523809) internal successors, (166), 141 states have internal predecessors, (166), 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) [2021-11-20 07:18:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 174 transitions. [2021-11-20 07:18:26,536 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 174 transitions. Word has length 31 [2021-11-20 07:18:26,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:26,536 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 174 transitions. [2021-11-20 07:18:26,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:18:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 174 transitions. [2021-11-20 07:18:26,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 07:18:26,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:26,538 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:18:26,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:26,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:18:26,743 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:18:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:26,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357432, now seen corresponding path program 1 times [2021-11-20 07:18:26,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:18:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912509244] [2021-11-20 07:18:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:26,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:18:26,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:18:26,746 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:18:26,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:18:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:26,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:18:26,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:26,992 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 21 treesize of output 17 [2021-11-20 07:18:27,056 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 20 treesize of output 12 [2021-11-20 07:18:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:18:27,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:18:27,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:18:27,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912509244] [2021-11-20 07:18:27,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912509244] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:18:27,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:18:27,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 14 [2021-11-20 07:18:27,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559908425] [2021-11-20 07:18:27,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:18:27,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:18:27,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:18:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:18:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:18:27,363 INFO L87 Difference]: Start difference. First operand 149 states and 174 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:18:28,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:28,082 INFO L93 Difference]: Finished difference Result 165 states and 179 transitions. [2021-11-20 07:18:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:18:28,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2021-11-20 07:18:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:28,084 INFO L225 Difference]: With dead ends: 165 [2021-11-20 07:18:28,084 INFO L226 Difference]: Without dead ends: 165 [2021-11-20 07:18:28,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:18:28,085 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 127 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:28,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 437 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:18:28,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-20 07:18:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2021-11-20 07:18:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 105 states have (on average 1.5714285714285714) internal successors, (165), 140 states have internal predecessors, (165), 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) [2021-11-20 07:18:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2021-11-20 07:18:28,091 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 33 [2021-11-20 07:18:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:28,091 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2021-11-20 07:18:28,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:18:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2021-11-20 07:18:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 07:18:28,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:28,093 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:18:28,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:28,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:18:28,305 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:18:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357431, now seen corresponding path program 1 times [2021-11-20 07:18:28,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:18:28,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840277524] [2021-11-20 07:18:28,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:28,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:18:28,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:18:28,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:18:28,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 07:18:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:28,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-20 07:18:28,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:28,708 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 [2021-11-20 07:18:28,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 07:18:28,800 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 31 treesize of output 23 [2021-11-20 07:18:28,806 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 20 treesize of output 12 [2021-11-20 07:18:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:18:28,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:29,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 07:18:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:18:29,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:18:29,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840277524] [2021-11-20 07:18:29,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840277524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:18:29,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:18:29,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2021-11-20 07:18:29,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483579112] [2021-11-20 07:18:29,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:18:29,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 07:18:29,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:18:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 07:18:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-11-20 07:18:29,817 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:18:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:18:31,824 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2021-11-20 07:18:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:18:31,825 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 33 [2021-11-20 07:18:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:18:31,827 INFO L225 Difference]: With dead ends: 173 [2021-11-20 07:18:31,827 INFO L226 Difference]: Without dead ends: 173 [2021-11-20 07:18:31,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2021-11-20 07:18:31,829 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 487 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:18:31,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 961 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 07:18:31,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-20 07:18:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 142. [2021-11-20 07:18:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 134 states have internal predecessors, (156), 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) [2021-11-20 07:18:31,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 164 transitions. [2021-11-20 07:18:31,837 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 164 transitions. Word has length 33 [2021-11-20 07:18:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:18:31,838 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 164 transitions. [2021-11-20 07:18:31,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:18:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 164 transitions. [2021-11-20 07:18:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 07:18:31,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:18:31,840 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:18:31,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:18:32,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:18:32,043 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:18:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:18:32,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1120570930, now seen corresponding path program 1 times [2021-11-20 07:18:32,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:18:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342219161] [2021-11-20 07:18:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:18:32,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:18:32,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:18:32,045 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:18:32,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 07:18:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:18:32,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-20 07:18:32,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:18:32,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:18:32,484 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:18:32,485 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 26 treesize of output 33 [2021-11-20 07:18:32,854 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 07:18:32,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 56 [2021-11-20 07:18:33,027 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 31 treesize of output 27 [2021-11-20 07:18:33,571 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:18:33,572 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 48 [2021-11-20 07:18:33,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:18:33,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:18:33,793 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 69 treesize of output 60 [2021-11-20 07:18:34,155 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 119 treesize of output 111 [2021-11-20 07:18:34,549 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:18:34,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 68 [2021-11-20 07:18:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:18:34,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:43,899 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_1))))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2)))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 07:19:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:19:59,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:19:59,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342219161] [2021-11-20 07:19:59,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342219161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:19:59,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:19:59,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 36 [2021-11-20 07:19:59,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110585731] [2021-11-20 07:19:59,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:19:59,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-20 07:19:59,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:19:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-20 07:19:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1119, Unknown=28, NotChecked=68, Total=1332 [2021-11-20 07:19:59,486 INFO L87 Difference]: Start difference. First operand 142 states and 164 transitions. Second operand has 37 states, 36 states have (on average 1.5) internal successors, (54), 30 states have internal predecessors, (54), 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) [2021-11-20 07:20:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:00,948 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2021-11-20 07:20:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:20:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.5) internal successors, (54), 30 states have internal predecessors, (54), 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 34 [2021-11-20 07:20:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:00,951 INFO L225 Difference]: With dead ends: 141 [2021-11-20 07:20:00,951 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 07:20:00,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 82.8s TimeCoverageRelationStatistics Valid=137, Invalid=1245, Unknown=28, NotChecked=72, Total=1482 [2021-11-20 07:20:00,953 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 20 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 592 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:00,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1341 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 387 Invalid, 0 Unknown, 592 Unchecked, 1.1s Time] [2021-11-20 07:20:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 07:20:00,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-20 07:20:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 101 states have (on average 1.5346534653465347) internal successors, (155), 133 states have internal predecessors, (155), 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) [2021-11-20 07:20:00,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 163 transitions. [2021-11-20 07:20:00,967 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 163 transitions. Word has length 34 [2021-11-20 07:20:00,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:00,967 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 163 transitions. [2021-11-20 07:20:00,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.5) internal successors, (54), 30 states have internal predecessors, (54), 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) [2021-11-20 07:20:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 163 transitions. [2021-11-20 07:20:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 07:20:00,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:00,969 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:20:00,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 07:20:01,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:20:01,171 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:20:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1120570929, now seen corresponding path program 1 times [2021-11-20 07:20:01,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:20:01,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330383444] [2021-11-20 07:20:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:01,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:20:01,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:20:01,173 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:20:01,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 07:20:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:01,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-20 07:20:01,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:01,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:20:01,620 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:20:01,620 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 25 treesize of output 32 [2021-11-20 07:20:01,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:20:02,004 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:20:02,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 07:20:02,148 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 27 treesize of output 23 [2021-11-20 07:20:02,174 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 [2021-11-20 07:20:02,657 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-20 07:20:02,657 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 93 [2021-11-20 07:20:02,686 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-20 07:20:02,687 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 74 [2021-11-20 07:20:02,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:02,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-20 07:20:02,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:02,790 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 86 treesize of output 85 [2021-11-20 07:20:03,570 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 07:20:03,570 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 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-20 07:20:03,593 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-20 07:20:03,594 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 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 07:20:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:20:03,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:20:15,283 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 78 treesize of output 76 [2021-11-20 07:20:19,409 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 58 treesize of output 56 [2021-11-20 07:20:28,766 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret55#1.base_39| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret55#1.base_39|))) (let ((.cse0 (bvadd (_ bv16 32) |c_ldv_zalloc_#res#1.offset|))) (and (or (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#res#1.base|))))) (exists ((|v_ULTIMATE.start_entry_point_#t~ret55#1.base_39| (_ BitVec 32))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |c_ldv_zalloc_#res#1.base| (_ bv1 1)) |v_ULTIMATE.start_entry_point_#t~ret55#1.base_39|)))))))) (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32))) (and (bvule .cse0 (_ bv9 32)) (= |v_ULTIMATE.start_entry_point_#t~ret55#1.base_39| |c_ldv_zalloc_#res#1.base|))) (bvule (bvadd (_ bv15 32) |c_ldv_zalloc_#res#1.offset|) .cse0))))) is different from false [2021-11-20 07:20:30,996 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret55#1.base_39| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret55#1.base_39|))) (let ((.cse0 (bvadd (_ bv16 32) |c_ldv_zalloc_#t~malloc13#1.offset|))) (and (bvule (bvadd |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv15 32)) .cse0) (or (and (= |v_ULTIMATE.start_entry_point_#t~ret55#1.base_39| |c_ldv_zalloc_#t~malloc13#1.base|) (bvule .cse0 (_ bv9 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base|))))) (= |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv0 32)) (exists ((|v_ULTIMATE.start_entry_point_#t~ret55#1.base_39| (_ BitVec 32))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |v_ULTIMATE.start_entry_point_#t~ret55#1.base_39|)))))))))))))) is different from false [2021-11-20 07:20:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-20 07:20:48,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:20:48,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330383444] [2021-11-20 07:20:48,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330383444] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:20:48,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:20:48,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 41 [2021-11-20 07:20:48,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026942140] [2021-11-20 07:20:48,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:20:48,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-20 07:20:48,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:20:48,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-20 07:20:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1438, Unknown=6, NotChecked=154, Total=1722 [2021-11-20 07:20:48,453 INFO L87 Difference]: Start difference. First operand 141 states and 163 transitions. Second operand has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 33 states have internal predecessors, (54), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:21:01,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:01,601 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2021-11-20 07:21:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 07:21:01,601 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 33 states have internal predecessors, (54), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 34 [2021-11-20 07:21:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:01,603 INFO L225 Difference]: With dead ends: 140 [2021-11-20 07:21:01,603 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 07:21:01,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=179, Invalid=1891, Unknown=8, NotChecked=178, Total=2256 [2021-11-20 07:21:01,605 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 25 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 699 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:01,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 2343 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 536 Invalid, 0 Unknown, 699 Unchecked, 2.4s Time] [2021-11-20 07:21:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 07:21:01,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-11-20 07:21:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 101 states have (on average 1.5247524752475248) internal successors, (154), 132 states have internal predecessors, (154), 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) [2021-11-20 07:21:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2021-11-20 07:21:01,612 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 34 [2021-11-20 07:21:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:01,613 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2021-11-20 07:21:01,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 33 states have internal predecessors, (54), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:21:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2021-11-20 07:21:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:21:01,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:01,615 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:21:01,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:01,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:01,822 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:01,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:01,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1168128431, now seen corresponding path program 1 times [2021-11-20 07:21:01,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:01,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996000649] [2021-11-20 07:21:01,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:01,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:01,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:01,824 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:01,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 07:21:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:01,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:21:01,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:02,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:02,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:02,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996000649] [2021-11-20 07:21:02,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996000649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:02,211 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:02,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:21:02,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583217489] [2021-11-20 07:21:02,211 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:02,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:21:02,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:21:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:02,213 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:02,667 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2021-11-20 07:21:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:21:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-11-20 07:21:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:02,669 INFO L225 Difference]: With dead ends: 156 [2021-11-20 07:21:02,669 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 07:21:02,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:02,670 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 135 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:02,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 301 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:21:02,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 07:21:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2021-11-20 07:21:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 101 states have (on average 1.5148514851485149) internal successors, (153), 131 states have internal predecessors, (153), 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) [2021-11-20 07:21:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2021-11-20 07:21:02,676 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 36 [2021-11-20 07:21:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:02,676 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2021-11-20 07:21:02,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2021-11-20 07:21:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 07:21:02,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:02,678 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-20 07:21:02,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:02,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:02,891 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:02,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1168128432, now seen corresponding path program 1 times [2021-11-20 07:21:02,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:02,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272407840] [2021-11-20 07:21:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:02,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:02,893 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:02,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 07:21:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:02,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:21:02,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:21:03,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:03,585 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 24 treesize of output 20 [2021-11-20 07:21:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:21:04,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:04,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272407840] [2021-11-20 07:21:04,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272407840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:21:04,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:21:04,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 07:21:04,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731786460] [2021-11-20 07:21:04,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:21:04,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:21:04,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:04,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:21:04,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:21:04,233 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:21:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:05,616 INFO L93 Difference]: Finished difference Result 169 states and 178 transitions. [2021-11-20 07:21:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:21:05,617 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 36 [2021-11-20 07:21:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:05,618 INFO L225 Difference]: With dead ends: 169 [2021-11-20 07:21:05,619 INFO L226 Difference]: Without dead ends: 169 [2021-11-20 07:21:05,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:21:05,620 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 384 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:05,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 767 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:21:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-20 07:21:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2021-11-20 07:21:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 101 states have (on average 1.504950495049505) internal successors, (152), 130 states have internal predecessors, (152), 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) [2021-11-20 07:21:05,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2021-11-20 07:21:05,626 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 36 [2021-11-20 07:21:05,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:05,626 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2021-11-20 07:21:05,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:21:05,627 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2021-11-20 07:21:05,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 07:21:05,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:05,628 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:05,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:05,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:05,828 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:05,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:05,829 INFO L85 PathProgramCache]: Analyzing trace with hash -427956391, now seen corresponding path program 1 times [2021-11-20 07:21:05,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:05,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162460950] [2021-11-20 07:21:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:05,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:05,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:05,830 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:05,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 07:21:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:05,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:21:05,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:06,053 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:21:06,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:21:06,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:06,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1162460950] [2021-11-20 07:21:06,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1162460950] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:06,294 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:06,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 07:21:06,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760347759] [2021-11-20 07:21:06,295 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:06,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:21:06,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:06,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:21:06,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:06,296 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-20 07:21:07,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:07,176 INFO L93 Difference]: Finished difference Result 212 states and 240 transitions. [2021-11-20 07:21:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:21:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 43 [2021-11-20 07:21:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:07,178 INFO L225 Difference]: With dead ends: 212 [2021-11-20 07:21:07,178 INFO L226 Difference]: Without dead ends: 212 [2021-11-20 07:21:07,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:21:07,179 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 122 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:07,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 640 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 07:21:07,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-20 07:21:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 134. [2021-11-20 07:21:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 101 states have (on average 1.4653465346534653) internal successors, (148), 126 states have internal predecessors, (148), 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) [2021-11-20 07:21:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 156 transitions. [2021-11-20 07:21:07,187 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 156 transitions. Word has length 43 [2021-11-20 07:21:07,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:07,187 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 156 transitions. [2021-11-20 07:21:07,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-20 07:21:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 156 transitions. [2021-11-20 07:21:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 07:21:07,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:07,189 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:07,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:07,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:07,401 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:07,402 INFO L85 PathProgramCache]: Analyzing trace with hash -427956390, now seen corresponding path program 1 times [2021-11-20 07:21:07,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:07,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175363785] [2021-11-20 07:21:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:07,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:07,403 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:07,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 07:21:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:07,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 07:21:07,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:07,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:21:07,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:21:08,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175363785] [2021-11-20 07:21:08,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175363785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:08,462 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:08,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 07:21:08,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240269730] [2021-11-20 07:21:08,462 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:08,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 07:21:08,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:08,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:21:08,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:21:08,464 INFO L87 Difference]: Start difference. First operand 134 states and 156 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 07:21:10,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:10,777 INFO L93 Difference]: Finished difference Result 213 states and 224 transitions. [2021-11-20 07:21:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:21:10,779 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2021-11-20 07:21:10,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:10,781 INFO L225 Difference]: With dead ends: 213 [2021-11-20 07:21:10,781 INFO L226 Difference]: Without dead ends: 213 [2021-11-20 07:21:10,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:21:10,782 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 144 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:10,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1297 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:21:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-20 07:21:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 130. [2021-11-20 07:21:10,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4257425742574257) internal successors, (144), 122 states have internal predecessors, (144), 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) [2021-11-20 07:21:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2021-11-20 07:21:10,790 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 43 [2021-11-20 07:21:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:10,791 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2021-11-20 07:21:10,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 07:21:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2021-11-20 07:21:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 07:21:10,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:10,792 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:10,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:11,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:11,010 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash 663336610, now seen corresponding path program 1 times [2021-11-20 07:21:11,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:11,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985239673] [2021-11-20 07:21:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:11,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:11,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:11,012 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:11,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 07:21:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:11,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:21:11,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:11,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:11,434 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:11,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985239673] [2021-11-20 07:21:11,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985239673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:11,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:11,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 07:21:11,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600060752] [2021-11-20 07:21:11,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:11,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:11,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:11,436 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:11,874 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2021-11-20 07:21:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:21:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-20 07:21:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:11,876 INFO L225 Difference]: With dead ends: 164 [2021-11-20 07:21:11,876 INFO L226 Difference]: Without dead ends: 164 [2021-11-20 07:21:11,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:11,878 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 95 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:11,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 215 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:21:11,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-20 07:21:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2021-11-20 07:21:11,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4158415841584158) internal successors, (143), 122 states have internal predecessors, (143), 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) [2021-11-20 07:21:11,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2021-11-20 07:21:11,884 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 43 [2021-11-20 07:21:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:11,884 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2021-11-20 07:21:11,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2021-11-20 07:21:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 07:21:11,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:11,886 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:11,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-20 07:21:12,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:12,100 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 663336611, now seen corresponding path program 1 times [2021-11-20 07:21:12,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:12,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292634075] [2021-11-20 07:21:12,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:12,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:12,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:12,102 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:12,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 07:21:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:12,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 07:21:12,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:21:12,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:12,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 07:21:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:21:13,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:13,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292634075] [2021-11-20 07:21:13,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292634075] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:21:13,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:21:13,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-20 07:21:13,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312246787] [2021-11-20 07:21:13,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:21:13,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:21:13,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:21:13,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:21:13,245 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:21:14,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:14,501 INFO L93 Difference]: Finished difference Result 201 states and 208 transitions. [2021-11-20 07:21:14,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:21:14,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2021-11-20 07:21:14,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:14,504 INFO L225 Difference]: With dead ends: 201 [2021-11-20 07:21:14,505 INFO L226 Difference]: Without dead ends: 201 [2021-11-20 07:21:14,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:21:14,506 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 355 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:14,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 724 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:21:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-20 07:21:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 130. [2021-11-20 07:21:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 122 states have internal predecessors, (142), 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) [2021-11-20 07:21:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 150 transitions. [2021-11-20 07:21:14,514 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 150 transitions. Word has length 43 [2021-11-20 07:21:14,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:14,514 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 150 transitions. [2021-11-20 07:21:14,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:21:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 150 transitions. [2021-11-20 07:21:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 07:21:14,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:14,516 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:14,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:14,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:14,731 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash -911366690, now seen corresponding path program 1 times [2021-11-20 07:21:14,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:14,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147317917] [2021-11-20 07:21:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:14,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:14,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:14,732 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:14,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 07:21:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:14,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:14,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:15,031 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:15,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147317917] [2021-11-20 07:21:15,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147317917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:15,031 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:15,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:21:15,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362275285] [2021-11-20 07:21:15,031 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:15,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:15,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:15,032 INFO L87 Difference]: Start difference. First operand 130 states and 150 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:15,060 INFO L93 Difference]: Finished difference Result 199 states and 230 transitions. [2021-11-20 07:21:15,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:21:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-11-20 07:21:15,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:15,069 INFO L225 Difference]: With dead ends: 199 [2021-11-20 07:21:15,069 INFO L226 Difference]: Without dead ends: 199 [2021-11-20 07:21:15,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:15,070 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 48 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:15,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 354 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:15,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-20 07:21:15,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 134. [2021-11-20 07:21:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 105 states have (on average 1.3904761904761904) internal successors, (146), 126 states have internal predecessors, (146), 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) [2021-11-20 07:21:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2021-11-20 07:21:15,077 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 44 [2021-11-20 07:21:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:15,078 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2021-11-20 07:21:15,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2021-11-20 07:21:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 07:21:15,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:15,079 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:15,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:15,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:15,287 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:15,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1811325411, now seen corresponding path program 1 times [2021-11-20 07:21:15,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:15,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331836607] [2021-11-20 07:21:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:15,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:15,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:15,288 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:15,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 07:21:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:15,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 07:21:15,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:15,684 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 21 treesize of output 17 [2021-11-20 07:21:15,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:15,989 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 28 treesize of output 27 [2021-11-20 07:21:16,101 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 21 treesize of output 13 [2021-11-20 07:21:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:21:16,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:22,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331836607] [2021-11-20 07:21:22,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331836607] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 07:21:22,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:21:22,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2021-11-20 07:21:22,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148561540] [2021-11-20 07:21:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:22,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:21:22,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:21:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=291, Unknown=2, NotChecked=0, Total=342 [2021-11-20 07:21:22,472 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:25,560 INFO L93 Difference]: Finished difference Result 166 states and 177 transitions. [2021-11-20 07:21:25,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:21:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-11-20 07:21:25,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:25,563 INFO L225 Difference]: With dead ends: 166 [2021-11-20 07:21:25,563 INFO L226 Difference]: Without dead ends: 166 [2021-11-20 07:21:25,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=89, Invalid=559, Unknown=2, NotChecked=0, Total=650 [2021-11-20 07:21:25,565 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 124 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:25,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 540 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 125 Unchecked, 0.7s Time] [2021-11-20 07:21:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-20 07:21:25,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 134. [2021-11-20 07:21:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 105 states have (on average 1.380952380952381) internal successors, (145), 126 states have internal predecessors, (145), 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) [2021-11-20 07:21:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2021-11-20 07:21:25,572 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 45 [2021-11-20 07:21:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:25,572 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2021-11-20 07:21:25,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2021-11-20 07:21:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 07:21:25,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:25,574 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:25,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-20 07:21:25,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:25,779 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:25,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1811325412, now seen corresponding path program 1 times [2021-11-20 07:21:25,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:25,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759612120] [2021-11-20 07:21:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:25,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:25,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:25,781 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:25,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 07:21:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:25,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-20 07:21:25,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:26,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:21:26,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 07:21:26,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:26,702 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 22 [2021-11-20 07:21:26,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:26,715 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 25 treesize of output 24 [2021-11-20 07:21:26,885 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 31 treesize of output 23 [2021-11-20 07:21:26,891 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 20 treesize of output 12 [2021-11-20 07:21:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:21:27,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:29,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 07:21:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:21:29,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:29,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759612120] [2021-11-20 07:21:29,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759612120] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:21:29,747 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:21:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2021-11-20 07:21:29,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776924789] [2021-11-20 07:21:29,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:21:29,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 07:21:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 07:21:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-11-20 07:21:29,750 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 26 states, 25 states have (on average 2.68) internal successors, (67), 23 states have internal predecessors, (67), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:21:33,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:33,616 INFO L93 Difference]: Finished difference Result 203 states and 210 transitions. [2021-11-20 07:21:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 07:21:33,617 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.68) internal successors, (67), 23 states have internal predecessors, (67), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 45 [2021-11-20 07:21:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:33,619 INFO L225 Difference]: With dead ends: 203 [2021-11-20 07:21:33,619 INFO L226 Difference]: Without dead ends: 203 [2021-11-20 07:21:33,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 07:21:33,620 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 396 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:33,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1146 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 765 Invalid, 0 Unknown, 28 Unchecked, 2.9s Time] [2021-11-20 07:21:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-20 07:21:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 134. [2021-11-20 07:21:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 126 states have internal predecessors, (144), 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) [2021-11-20 07:21:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2021-11-20 07:21:33,627 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 45 [2021-11-20 07:21:33,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:33,628 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2021-11-20 07:21:33,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.68) internal successors, (67), 23 states have internal predecessors, (67), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 07:21:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2021-11-20 07:21:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 07:21:33,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:33,629 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:33,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:33,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:33,829 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1752164425, now seen corresponding path program 1 times [2021-11-20 07:21:33,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:33,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401214691] [2021-11-20 07:21:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:33,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:33,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:33,831 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:33,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 07:21:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:33,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:21:33,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:34,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:21:34,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:34,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401214691] [2021-11-20 07:21:34,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401214691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:34,155 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:34,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:21:34,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045767822] [2021-11-20 07:21:34,156 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:34,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:21:34,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:21:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:21:34,157 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:34,206 INFO L93 Difference]: Finished difference Result 229 states and 245 transitions. [2021-11-20 07:21:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 07:21:34,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-11-20 07:21:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:34,209 INFO L225 Difference]: With dead ends: 229 [2021-11-20 07:21:34,209 INFO L226 Difference]: Without dead ends: 229 [2021-11-20 07:21:34,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:34,210 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 145 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:34,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 338 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-20 07:21:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 133. [2021-11-20 07:21:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 125 states have internal predecessors, (141), 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) [2021-11-20 07:21:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2021-11-20 07:21:34,218 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 45 [2021-11-20 07:21:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:34,219 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2021-11-20 07:21:34,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:21:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2021-11-20 07:21:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-20 07:21:34,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:34,220 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:34,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:34,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:34,431 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash 448073058, now seen corresponding path program 1 times [2021-11-20 07:21:34,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:34,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490089563] [2021-11-20 07:21:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:34,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:34,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:34,433 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:34,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 07:21:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:34,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:21:34,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:21:34,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:21:34,823 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:21:34,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490089563] [2021-11-20 07:21:34,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490089563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:34,823 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:34,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 07:21:34,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410001777] [2021-11-20 07:21:34,824 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:34,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:21:34,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:21:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:21:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:34,826 INFO L87 Difference]: Start difference. First operand 133 states and 149 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2021-11-20 07:21:34,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:34,888 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2021-11-20 07:21:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:21:34,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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 47 [2021-11-20 07:21:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:34,890 INFO L225 Difference]: With dead ends: 160 [2021-11-20 07:21:34,890 INFO L226 Difference]: Without dead ends: 160 [2021-11-20 07:21:34,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:34,890 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 73 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:34,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 662 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:21:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-20 07:21:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 133. [2021-11-20 07:21:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.3461538461538463) internal successors, (140), 125 states have internal predecessors, (140), 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) [2021-11-20 07:21:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2021-11-20 07:21:34,898 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 47 [2021-11-20 07:21:34,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:34,898 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2021-11-20 07:21:34,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2021-11-20 07:21:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2021-11-20 07:21:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 07:21:34,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:34,900 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:34,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 07:21:35,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:21:35,116 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:21:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash 316512991, now seen corresponding path program 1 times [2021-11-20 07:21:35,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:21:35,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037352867] [2021-11-20 07:21:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:35,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:21:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:21:35,119 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:21:35,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 07:21:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:35,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-20 07:21:35,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:21:35,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:21:35,709 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:21:35,709 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 26 treesize of output 33 [2021-11-20 07:21:36,091 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 07:21:36,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 54 [2021-11-20 07:21:36,265 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 31 treesize of output 27 [2021-11-20 07:21:36,906 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:21:36,906 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2021-11-20 07:21:37,111 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 [2021-11-20 07:21:37,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:37,147 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 69 treesize of output 60 [2021-11-20 07:21:38,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:38,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:38,449 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 07:21:38,450 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 107 treesize of output 74 [2021-11-20 07:21:38,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:38,494 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 22 [2021-11-20 07:21:39,060 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 117 treesize of output 109 [2021-11-20 07:21:39,539 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:21:39,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 66 [2021-11-20 07:21:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:21:39,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:48,448 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 72 treesize of output 70 [2021-11-20 07:21:50,502 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse0 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse1 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse0) (select .cse0 .cse1)))) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 07:21:52,561 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_4))) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse2 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) (select .cse1 .cse2)))) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 07:22:36,010 WARN L227 SmtUtils]: Spent 16.27s on a formula simplification. DAG size of input: 46 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:22:36,011 INFO L354 Elim1Store]: treesize reduction 80, result has 39.4 percent of original size [2021-11-20 07:22:36,012 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 68618 treesize of output 36365 [2021-11-20 07:22:36,352 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-20 07:22:36,352 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 36757 treesize of output 34607 [2021-11-20 07:22:36,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:22:36,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037352867] [2021-11-20 07:22:36,571 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:22:36,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [264744214] [2021-11-20 07:22:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:36,572 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 07:22:36,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 07:22:36,576 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 07:22:36,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-20 07:22:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:37,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-20 07:22:37,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:37,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:22:37,489 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:22:37,489 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 25 treesize of output 32 [2021-11-20 07:22:37,731 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-20 07:22:37,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 55 [2021-11-20 07:22:37,869 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 31 treesize of output 27 [2021-11-20 07:22:38,267 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:22:38,267 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 47 [2021-11-20 07:22:38,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:22:38,380 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 70 treesize of output 61 [2021-11-20 07:22:38,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:22:39,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:22:39,342 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 22 [2021-11-20 07:22:39,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:22:39,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:22:39,380 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 07:22:39,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 74 [2021-11-20 07:22:39,837 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 117 treesize of output 109 [2021-11-20 07:22:40,078 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:22:40,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 66 [2021-11-20 07:22:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:22:40,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:22:42,924 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 72 treesize of output 70 [2021-11-20 07:22:45,000 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_5))) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse2 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) (select .cse1 .cse2)))) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 07:23:34,490 WARN L227 SmtUtils]: Spent 16.39s on a formula simplification. DAG size of input: 46 DAG size of output: 28 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:23:34,491 INFO L354 Elim1Store]: treesize reduction 80, result has 39.4 percent of original size [2021-11-20 07:23:34,491 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 69130 treesize of output 36877 [2021-11-20 07:23:34,669 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:23:34,670 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 37301 treesize of output 35129 [2021-11-20 07:23:34,832 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:23:34,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605156087] [2021-11-20 07:23:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:23:34,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:23:34,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:23:34,848 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:23:34,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-20 07:23:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:23:34,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-20 07:23:34,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:23:34,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:23:35,312 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:23:35,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-20 07:23:37,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:23:37,696 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 18 treesize of output 14 [2021-11-20 07:23:39,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:23:39,183 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 72 treesize of output 65 [2021-11-20 07:23:39,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:23:39,209 INFO L354 Elim1Store]: treesize reduction 75, result has 16.7 percent of original size [2021-11-20 07:23:39,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 58 [2021-11-20 07:23:39,666 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 54 treesize of output 42 [2021-11-20 07:23:39,984 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:23:39,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2021-11-20 07:23:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:23:40,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:23:42,540 INFO L354 Elim1Store]: treesize reduction 5, result has 91.1 percent of original size [2021-11-20 07:23:42,540 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 72 treesize of output 71 [2021-11-20 07:23:46,180 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 07:23:46,181 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 1592 treesize of output 1474 [2021-11-20 07:23:46,219 INFO L354 Elim1Store]: treesize reduction 26, result has 13.3 percent of original size [2021-11-20 07:23:46,220 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 1494 treesize of output 1378 [2021-11-20 07:23:46,260 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 752 treesize of output 704 [2021-11-20 07:23:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:23:50,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605156087] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:23:50,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:23:50,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 40 [2021-11-20 07:23:50,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616850159] [2021-11-20 07:23:50,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:23:50,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-20 07:23:50,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:23:50,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-20 07:23:50,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=3377, Unknown=18, NotChecked=360, Total=4032 [2021-11-20 07:23:50,762 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand has 41 states, 40 states have (on average 1.8) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:23:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:23:55,315 INFO L93 Difference]: Finished difference Result 156 states and 168 transitions. [2021-11-20 07:23:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:23:55,315 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.8) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 46 [2021-11-20 07:23:55,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:23:55,317 INFO L225 Difference]: With dead ends: 156 [2021-11-20 07:23:55,317 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 07:23:55,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 155 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 95.3s TimeCoverageRelationStatistics Valid=495, Invalid=4901, Unknown=18, NotChecked=438, Total=5852 [2021-11-20 07:23:55,320 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 174 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:23:55,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1947 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1071 Invalid, 0 Unknown, 454 Unchecked, 2.2s Time] [2021-11-20 07:23:55,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 07:23:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 133. [2021-11-20 07:23:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.3365384615384615) internal successors, (139), 125 states have internal predecessors, (139), 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) [2021-11-20 07:23:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2021-11-20 07:23:55,325 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 46 [2021-11-20 07:23:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:23:55,325 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2021-11-20 07:23:55,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.8) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:23:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2021-11-20 07:23:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-20 07:23:55,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:23:55,326 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:23:55,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 07:23:55,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-20 07:23:55,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-20 07:23:55,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt [2021-11-20 07:23:55,927 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:23:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:23:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 316512992, now seen corresponding path program 1 times [2021-11-20 07:23:55,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:23:55,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573312501] [2021-11-20 07:23:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:23:55,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:23:55,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:23:55,929 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:23:55,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-20 07:23:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:23:56,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-20 07:23:56,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:23:56,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:23:56,427 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:23:56,427 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 25 treesize of output 32 [2021-11-20 07:23:56,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:23:56,791 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:23:56,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 49 [2021-11-20 07:23:56,896 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 [2021-11-20 07:23:56,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 07:23:57,294 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:23:57,294 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-20 07:23:57,326 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-20 07:23:57,326 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 78 treesize of output 44 [2021-11-20 07:23:57,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:23:57,401 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 63 treesize of output 54 [2021-11-20 07:23:57,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:23:57,406 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 86 treesize of output 85 [2021-11-20 07:23:58,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:23:58,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:23:58,287 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-20 07:23:58,287 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 108 treesize of output 110 [2021-11-20 07:23:58,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:23:58,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:23:58,311 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 07:23:58,311 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 95 treesize of output 62 [2021-11-20 07:23:59,067 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 07:23:59,067 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 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-20 07:23:59,088 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-20 07:23:59,088 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 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 07:23:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:23:59,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:14,802 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse8 v_DerPreprocessor_6))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse8 v_DerPreprocessor_7))) (.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse7 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset|)) (.cse5 (store (store (select .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse6 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse7 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (select (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) .cse2) .cse3) (_ bv8 32)) (select |c_#length| (select (select (store .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse9 (let ((.cse12 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse12 v_DerPreprocessor_7))) (.cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse14 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse11 (store (store (select .cse10 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse14 v_prenex_1))) (select (select (store .cse10 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse11) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse12 v_DerPreprocessor_6)) |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse14 v_prenex_2) .cse13)) (bvadd (_ bv4294967292 32) (select .cse11 .cse13)))))))) (bvule (bvadd .cse9 (_ bv7 32)) (bvadd (_ bv8 32) .cse9))))) is different from false [2021-11-20 07:24:16,916 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse8 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (.cse9 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse8 (store (select |c_#memory_$Pointer$.base| .cse8) .cse9 v_DerPreprocessor_6))) (.cse0 (store |c_#memory_$Pointer$.offset| .cse8 (store (select |c_#memory_$Pointer$.offset| .cse8) .cse9 v_DerPreprocessor_7))) (.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse7 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset|)) (.cse5 (store (store (select .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse6 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse7 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) .cse2) .cse3)) (select |c_#length| (select (select (store .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse5) .cse2) .cse3)))))))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse10 (let ((.cse13 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (.cse14 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse13 (store (select |c_#memory_$Pointer$.offset| .cse13) .cse14 v_DerPreprocessor_7))) (.cse15 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse16 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse12 (store (store (select .cse11 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse15 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse16 v_prenex_1))) (select (select (store .cse11 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse12) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse13 (store (select |c_#memory_$Pointer$.base| .cse13) .cse14 v_DerPreprocessor_6)) |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse15 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse16 v_prenex_2) .cse15)) (bvadd (_ bv4294967292 32) (select .cse12 .cse15)))))))) (bvule (bvadd (_ bv7 32) .cse10) (bvadd (_ bv8 32) .cse10))))) is different from false [2021-11-20 07:24:33,986 WARN L227 SmtUtils]: Spent 16.77s on a formula simplification. DAG size of input: 70 DAG size of output: 52 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:24:33,987 INFO L354 Elim1Store]: treesize reduction 358, result has 28.4 percent of original size [2021-11-20 07:24:33,987 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 119338 treesize of output 82443 [2021-11-20 07:24:42,379 WARN L227 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:24:42,379 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:24:42,379 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 83223 treesize of output 52558 [2021-11-20 07:24:42,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:24:42,628 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 52554 treesize of output 50524 [2021-11-20 07:24:42,894 INFO L354 Elim1Store]: treesize reduction 34, result has 62.6 percent of original size [2021-11-20 07:24:42,895 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 50524 treesize of output 48256 [2021-11-20 07:24:43,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:24:43,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573312501] [2021-11-20 07:24:43,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:24:43,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2063192027] [2021-11-20 07:24:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:24:43,162 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 07:24:43,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 07:24:43,175 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 07:24:43,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-20 07:24:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:24:43,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-20 07:24:43,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:24:43,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:24:43,773 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:24:43,773 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 27 treesize of output 34 [2021-11-20 07:24:43,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:24:43,987 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:24:43,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 44 [2021-11-20 07:24:44,026 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 [2021-11-20 07:24:44,038 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 27 treesize of output 23 [2021-11-20 07:24:44,294 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:24:44,295 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-20 07:24:44,322 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-20 07:24:44,323 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 78 treesize of output 44 [2021-11-20 07:24:44,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:44,431 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 63 treesize of output 54 [2021-11-20 07:24:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:44,440 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 86 treesize of output 85 [2021-11-20 07:24:45,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:24:45,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:45,137 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-20 07:24:45,137 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 108 treesize of output 110 [2021-11-20 07:24:45,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:24:45,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:24:45,163 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-20 07:24:45,164 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 95 treesize of output 62 [2021-11-20 07:24:45,571 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 07:24:45,571 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 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-20 07:24:45,596 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-20 07:24:45,596 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 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-20 07:24:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:24:45,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:24:48,129 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse8 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse8 v_DerPreprocessor_8))) (.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse8 v_DerPreprocessor_9))) (.cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse7 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse1 (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse6 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse7 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset|)) (.cse5 (store (store (select .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse6 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse7 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) (let ((.cse2 (select .cse5 .cse6)) (.cse3 (bvadd (_ bv4294967292 32) (select .cse1 .cse6)))) (bvule (bvadd (select (select (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse1) .cse2) .cse3) (_ bv8 32)) (select |c_#length| (select (select (store .cse4 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse5) .cse2) .cse3)))))))) (forall ((v_prenex_4 (_ BitVec 32)) (v_prenex_3 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse9 (let ((.cse12 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse12 v_DerPreprocessor_9))) (.cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse14 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse11 (store (store (select .cse10 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse14 v_prenex_3))) (select (select (store .cse10 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse11) (select (store (store (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) .cse12 v_DerPreprocessor_8)) |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse14 v_prenex_4) .cse13)) (bvadd (_ bv4294967292 32) (select .cse11 .cse13)))))))) (bvule (bvadd (_ bv7 32) .cse9) (bvadd (_ bv8 32) .cse9))))) is different from false [2021-11-20 07:25:40,562 WARN L227 SmtUtils]: Spent 8.79s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:25:57,474 WARN L227 SmtUtils]: Spent 16.68s on a formula simplification. DAG size of input: 70 DAG size of output: 29 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:25:57,475 INFO L354 Elim1Store]: treesize reduction 448, result has 10.4 percent of original size [2021-11-20 07:25:57,476 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 411690 treesize of output 313265 [2021-11-20 07:26:14,251 WARN L227 SmtUtils]: Spent 16.49s on a formula simplification. DAG size of input: 65 DAG size of output: 28 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:26:14,252 INFO L354 Elim1Store]: treesize reduction 240, result has 17.8 percent of original size [2021-11-20 07:26:14,253 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 21774229 treesize of output 13336600 [2021-11-20 07:26:29,265 WARN L227 SmtUtils]: Spent 15.01s on a formula simplification that was a NOOP. DAG size: 703 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 07:26:45,402 WARN L227 SmtUtils]: Spent 16.13s on a formula simplification that was a NOOP. DAG size: 697 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 07:26:45,589 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:26:45,590 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 13434880 treesize of output 12877846 [2021-11-20 07:26:59,872 WARN L227 SmtUtils]: Spent 14.28s on a formula simplification that was a NOOP. DAG size: 707 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 07:27:00,053 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:27:00,054 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 12877846 treesize of output 12320812 [2021-11-20 07:27:14,576 WARN L227 SmtUtils]: Spent 14.52s on a formula simplification that was a NOOP. DAG size: 715 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-20 07:27:15,143 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 07:27:15,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902093213] [2021-11-20 07:27:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:15,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:27:15,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:15,147 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:27:15,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-20 07:27:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:15,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-20 07:27:15,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:15,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:27:15,927 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 07:27:15,927 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 18 treesize of output 18 [2021-11-20 07:27:16,876 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 18 treesize of output 14 [2021-11-20 07:27:16,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 07:27:20,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:20,148 INFO L354 Elim1Store]: treesize reduction 75, result has 16.7 percent of original size [2021-11-20 07:27:20,149 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 132 treesize of output 113 [2021-11-20 07:27:20,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:27:20,195 INFO L354 Elim1Store]: treesize reduction 67, result has 16.3 percent of original size [2021-11-20 07:27:20,195 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 119 treesize of output 76 [2021-11-20 07:27:22,471 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-20 07:27:22,471 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 3 case distinctions, treesize of input 96 treesize of output 60 [2021-11-20 07:27:22,498 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-20 07:27:22,499 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 3 case distinctions, treesize of input 51 treesize of output 33 [2021-11-20 07:27:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:27:22,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:27:22,962 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:27:22,963 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 216 treesize of output 220 [2021-11-20 07:27:39,493 INFO L354 Elim1Store]: treesize reduction 48, result has 15.8 percent of original size [2021-11-20 07:27:39,493 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 470 treesize of output 440 [2021-11-20 07:27:39,552 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-20 07:27:39,553 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 1044 treesize of output 990 [2021-11-20 07:27:39,586 INFO L354 Elim1Store]: treesize reduction 24, result has 14.3 percent of original size [2021-11-20 07:27:39,587 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 906 treesize of output 854 [2021-11-20 07:27:39,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:27:39,627 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 642 treesize of output 638 [2021-11-20 07:27:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:27:43,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902093213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:27:43,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:27:43,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 40 [2021-11-20 07:27:43,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730975436] [2021-11-20 07:27:43,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:27:43,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-20 07:27:43,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:27:43,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-20 07:27:43,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=3513, Unknown=18, NotChecked=366, Total=4160 [2021-11-20 07:27:43,043 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand has 41 states, 40 states have (on average 1.8) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:27:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:27:52,660 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-11-20 07:27:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:27:52,660 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.8) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 46 [2021-11-20 07:27:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:27:52,661 INFO L225 Difference]: With dead ends: 155 [2021-11-20 07:27:52,661 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 07:27:52,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 103.7s TimeCoverageRelationStatistics Valid=448, Invalid=5096, Unknown=18, NotChecked=444, Total=6006 [2021-11-20 07:27:52,664 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 172 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:27:52,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 2033 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 879 Invalid, 0 Unknown, 430 Unchecked, 3.4s Time] [2021-11-20 07:27:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 07:27:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 133. [2021-11-20 07:27:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 104 states have (on average 1.3269230769230769) internal successors, (138), 125 states have internal predecessors, (138), 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) [2021-11-20 07:27:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2021-11-20 07:27:52,672 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 46 [2021-11-20 07:27:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:27:52,672 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2021-11-20 07:27:52,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 1.8) internal successors, (72), 35 states have internal predecessors, (72), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:27:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2021-11-20 07:27:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 07:27:52,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:27:52,674 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:27:52,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:52,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:53,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2021-11-20 07:27:53,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt [2021-11-20 07:27:53,287 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:27:53,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash -773690304, now seen corresponding path program 1 times [2021-11-20 07:27:53,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:27:53,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888894293] [2021-11-20 07:27:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:53,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:27:53,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:27:53,289 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:27:53,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-20 07:27:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:53,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:27:53,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:27:53,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:27:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:27:53,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:27:53,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888894293] [2021-11-20 07:27:53,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888894293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:27:53,726 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:27:53,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 07:27:53,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559540990] [2021-11-20 07:27:53,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:27:53,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:27:53,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:27:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:27:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:27:53,727 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:27:54,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:27:54,164 INFO L93 Difference]: Finished difference Result 153 states and 161 transitions. [2021-11-20 07:27:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:27:54,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2021-11-20 07:27:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:27:54,166 INFO L225 Difference]: With dead ends: 153 [2021-11-20 07:27:54,166 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 07:27:54,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:27:54,167 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 92 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:27:54,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 268 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:27:54,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 07:27:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 132. [2021-11-20 07:27:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 124 states have internal predecessors, (136), 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) [2021-11-20 07:27:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2021-11-20 07:27:54,174 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 48 [2021-11-20 07:27:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:27:54,175 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2021-11-20 07:27:54,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 07:27:54,175 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2021-11-20 07:27:54,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 07:27:54,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:27:54,176 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:27:54,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:54,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:27:54,393 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:27:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash -773690303, now seen corresponding path program 1 times [2021-11-20 07:27:54,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:27:54,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961420617] [2021-11-20 07:27:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:54,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:27:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:27:54,396 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:27:54,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-20 07:27:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:54,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:27:54,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:27:55,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:27:55,556 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 24 treesize of output 20 [2021-11-20 07:27:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 07:27:56,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:27:56,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961420617] [2021-11-20 07:27:56,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961420617] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:27:56,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:27:56,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 07:27:56,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647050477] [2021-11-20 07:27:56,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:27:56,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:27:56,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:27:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:27:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:27:56,290 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:27:58,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:27:58,179 INFO L93 Difference]: Finished difference Result 198 states and 202 transitions. [2021-11-20 07:27:58,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:27:58,180 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2021-11-20 07:27:58,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:27:58,182 INFO L225 Difference]: With dead ends: 198 [2021-11-20 07:27:58,182 INFO L226 Difference]: Without dead ends: 198 [2021-11-20 07:27:58,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-20 07:27:58,183 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 382 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:27:58,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1093 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 07:27:58,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-20 07:27:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 132. [2021-11-20 07:27:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 124 states have internal predecessors, (135), 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) [2021-11-20 07:27:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2021-11-20 07:27:58,188 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 48 [2021-11-20 07:27:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:27:58,189 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2021-11-20 07:27:58,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 07:27:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2021-11-20 07:27:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-20 07:27:58,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:27:58,190 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:27:58,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:58,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:27:58,405 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:27:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2080353260, now seen corresponding path program 1 times [2021-11-20 07:27:58,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:27:58,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727577303] [2021-11-20 07:27:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:58,407 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:27:58,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:27:58,408 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:27:58,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-20 07:27:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:58,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-20 07:27:58,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:58,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:27:59,052 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:27:59,052 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 35 [2021-11-20 07:27:59,438 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:27:59,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 49 [2021-11-20 07:27:59,552 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 22 treesize of output 18 [2021-11-20 07:27:59,569 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 [2021-11-20 07:27:59,802 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 30 treesize of output 12 [2021-11-20 07:27:59,953 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:27:59,953 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 37 treesize of output 21 [2021-11-20 07:28:00,085 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 25 treesize of output 24 [2021-11-20 07:28:00,100 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 [2021-11-20 07:28:00,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:28:00,960 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 23 treesize of output 22 [2021-11-20 07:28:00,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:28:00,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 07:28:01,327 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 35 treesize of output 27 [2021-11-20 07:28:01,724 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:28:01,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 14 [2021-11-20 07:28:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:28:01,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:28:09,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 32) (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_10))))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2)))) is different from false [2021-11-20 07:28:14,042 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| (_ BitVec 32))) (or (let ((.cse0 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (let ((.cse3 (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32))) (.cse2 (not .cse0)) (.cse1 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|)))) (and (or (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |c_ldv_zalloc_#res#1.base|)) (and .cse0 .cse1)) (or (and (or .cse2 (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))) .cse3) .cse1) (or .cse0 .cse3) (or (= (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ bv8 32)) (_ bv0 32)) .cse2 (not .cse1))))) (exists ((|v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307| (_ BitVec 32))) (and (let ((.cse4 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (or (and (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|) .cse4) (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|) (and .cse4 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|)))))))))) is different from false [2021-11-20 07:28:18,481 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| (_ BitVec 32))) (or (exists ((|v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307| (_ BitVec 32))) (and (let ((.cse0 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (or (and (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|) .cse0) (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|) (and .cse0 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|)))))))) (let ((.cse4 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (let ((.cse2 (= |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv0 32))) (.cse1 (not .cse4)) (.cse3 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|)))) (and (or (and (or .cse1 (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))) .cse2) .cse3) (or .cse4 .cse2) (or (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |c_ldv_zalloc_#t~malloc13#1.base|)) (and .cse4 .cse3)) (or (= (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ bv8 32)) (_ bv0 32)) .cse1 (not .cse3))))))) is different from false [2021-11-20 07:28:35,084 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:28:55,422 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:29:01,741 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:29:08,003 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:29:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-20 07:29:08,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:29:08,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727577303] [2021-11-20 07:29:08,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727577303] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:29:08,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 07:29:08,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 44 [2021-11-20 07:29:08,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350432350] [2021-11-20 07:29:08,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 07:29:08,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-20 07:29:08,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:29:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-20 07:29:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1563, Unknown=10, NotChecked=246, Total=1980 [2021-11-20 07:29:08,011 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand has 45 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 36 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:29:10,210 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base|)) (forall ((|v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| (_ BitVec 32))) (or (exists ((|v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307| (_ BitVec 32))) (and (let ((.cse0 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (or (and (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|) .cse0) (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|) (and .cse0 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|)))))))) (let ((.cse4 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (let ((.cse2 (= |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv0 32))) (.cse1 (not .cse4)) (.cse3 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|)))) (and (or (and (or .cse1 (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))) .cse2) .cse3) (or .cse4 .cse2) (or (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |c_ldv_zalloc_#t~malloc13#1.base|)) (and .cse4 .cse3)) (or (= (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ bv8 32)) (_ bv0 32)) .cse1 (not .cse3))))))) (= |c_ldv_zalloc_#t~malloc13#1.offset| (_ bv0 32)) (= (store |c_old(#valid)| |c_ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |c_#valid|)) is different from false [2021-11-20 07:29:12,234 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| (_ BitVec 32))) (or (let ((.cse0 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (let ((.cse3 (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32))) (.cse2 (not .cse0)) (.cse1 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|)))) (and (or (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |c_ldv_zalloc_#res#1.base|)) (and .cse0 .cse1)) (or (and (or .cse2 (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))) .cse3) .cse1) (or .cse0 .cse3) (or (= (bvadd |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (_ bv8 32)) (_ bv0 32)) .cse2 (not .cse1))))) (exists ((|v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307| (_ BitVec 32))) (and (let ((.cse4 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_35|))) (or (and (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|) .cse4) (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_18| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|) (and .cse4 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_20| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_55|))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_307|)))))))))) (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |c_ldv_zalloc_#res#1.base|)))) (= (store |c_old(#valid)| |c_ldv_zalloc_#res#1.base| (_ bv1 1)) |c_#valid|) (= |c_ldv_zalloc_#res#1.offset| (_ bv0 32))) is different from false [2021-11-20 07:29:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:29:14,760 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-11-20 07:29:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 07:29:14,761 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 36 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2021-11-20 07:29:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:29:14,762 INFO L225 Difference]: With dead ends: 133 [2021-11-20 07:29:14,763 INFO L226 Difference]: Without dead ends: 133 [2021-11-20 07:29:14,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=269, Invalid=2289, Unknown=12, NotChecked=510, Total=3080 [2021-11-20 07:29:14,765 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 84 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 665 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:29:14,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1453 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 226 Invalid, 0 Unknown, 665 Unchecked, 0.8s Time] [2021-11-20 07:29:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-20 07:29:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-20 07:29:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 105 states have (on average 1.2952380952380953) internal successors, (136), 125 states have internal predecessors, (136), 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) [2021-11-20 07:29:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2021-11-20 07:29:14,771 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 51 [2021-11-20 07:29:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:29:14,772 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2021-11-20 07:29:14,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 36 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 07:29:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2021-11-20 07:29:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 07:29:14,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:29:14,773 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:29:14,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-20 07:29:15,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:29:15,004 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 46 more)] === [2021-11-20 07:29:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:29:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash 66441813, now seen corresponding path program 1 times [2021-11-20 07:29:15,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:29:15,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296166064] [2021-11-20 07:29:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:29:15,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:29:15,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:29:15,007 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:29:15,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be666cd2-a658-406f-8248-c54c23d635cd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-20 07:29:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:29:15,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-20 07:29:15,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:29:15,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 07:29:15,587 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:29:15,588 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 27 treesize of output 34 [2021-11-20 07:29:16,021 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-20 07:29:16,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 42 [2021-11-20 07:29:16,156 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 25 treesize of output 21 [2021-11-20 07:29:16,644 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-20 07:29:16,644 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 39 [2021-11-20 07:29:16,735 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 43 treesize of output 30 [2021-11-20 07:29:16,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-20 07:29:18,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:29:18,487 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 25 treesize of output 24 [2021-11-20 07:29:18,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:29:18,503 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 0 case distinctions, treesize of input 52 treesize of output 42 [2021-11-20 07:29:19,180 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 45 treesize of output 37 [2021-11-20 07:29:20,059 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:29:20,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 22 [2021-11-20 07:29:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:29:20,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:29:31,148 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (bvult (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem57#1.base|) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_11)))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) |c_#StackHeapBarrier|)) is different from false [2021-11-20 07:29:33,187 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_11 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (bvult (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_11))))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2)) |c_#StackHeapBarrier|)) is different from false [2021-11-20 07:29:55,342 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_20| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_39| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_22| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_59| (_ BitVec 32))) (or (let ((.cse4 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_39|))) (let ((.cse0 (not .cse4)) (.cse2 (bvult |c_ldv_zalloc_#res#1.base| |c_#StackHeapBarrier|)) (.cse3 (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_20| |c_ldv_zalloc_#res#1.base|)))) (and (or (not (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_22| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_59|)) .cse0) (let ((.cse1 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_22| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_59|)))) (or (and (bvult |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_20| |c_#StackHeapBarrier|) .cse1) (and (or .cse0 (not .cse1)) .cse2 .cse3))) (or .cse4 (and .cse2 .cse3))))) (exists ((|v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_319| (_ BitVec 32))) (and (let ((.cse7 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_20| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_319|)) (.cse8 (= |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_20| |v_ULTIMATE.start_entry_point_~hdev~0#1.base_BEFORE_CALL_39|)) (.cse6 (not (= (_ bv0 32) (bvadd |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_319| (_ bv1 32)))))) (or (let ((.cse5 (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_22| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_59|)))) (and (or (not (bvule |v_ULTIMATE.start_entry_point_~intf~2#1.base_BEFORE_CALL_20| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_319|)) (and (not .cse5) .cse6)) (or .cse7 (and .cse5 .cse8)))) (and (not .cse8) .cse6 .cse7) (and (= |v_ULTIMATE.start_entry_point_~intf~2#1.offset_BEFORE_CALL_22| |v_ULTIMATE.start_entry_point_~hdev~0#1.offset_BEFORE_CALL_59|) .cse8 .cse6))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ldv_zalloc_#Ultimate.meminit_#ptr#1.base_319|)))))))))) is different from false