./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:46:16,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:46:16,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:46:16,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:46:16,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:46:16,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:46:16,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:46:16,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:46:16,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:46:16,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:46:16,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:46:16,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:46:16,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:46:16,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:46:16,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:46:16,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:46:16,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:46:16,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:46:16,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:46:16,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:46:16,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:46:16,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:46:16,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:46:16,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:46:16,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:46:16,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:46:16,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:46:16,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:46:16,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:46:16,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:46:16,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:46:16,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:46:16,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:46:16,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:46:16,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:46:16,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:46:16,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:46:16,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:46:16,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:46:16,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:46:16,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:46:16,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:46:16,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:46:16,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:46:16,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:46:16,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:46:16,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:46:16,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:46:16,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:46:16,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:46:16,189 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:46:16,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:46:16,189 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:46:16,189 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:46:16,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:46:16,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:46:16,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:46:16,190 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:46:16,191 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:46:16,191 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:46:16,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:46:16,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:46:16,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:46:16,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:46:16,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:46:16,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:46:16,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:46:16,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:46:16,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:46:16,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:46:16,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:46:16,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:46:16,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:46:16,194 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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2021-11-20 05:46:16,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:46:16,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:46:16,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:46:16,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:46:16,495 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:46:16,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2021-11-20 05:46:16,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/60abceb15/421a3e010154490ca86b82edb534a69c/FLAGfc7d8c900 [2021-11-20 05:46:17,127 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:46:17,128 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2021-11-20 05:46:17,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/60abceb15/421a3e010154490ca86b82edb534a69c/FLAGfc7d8c900 [2021-11-20 05:46:17,404 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/60abceb15/421a3e010154490ca86b82edb534a69c [2021-11-20 05:46:17,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:46:17,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:46:17,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:46:17,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:46:17,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:46:17,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:46:17" (1/1) ... [2021-11-20 05:46:17,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739ca4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:17, skipping insertion in model container [2021-11-20 05:46:17,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:46:17" (1/1) ... [2021-11-20 05:46:17,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:46:17,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:46:18,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:46:18,085 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-20 05:46:18,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60de523c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:18, skipping insertion in model container [2021-11-20 05:46:18,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:46:18,086 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:46:18,089 INFO L158 Benchmark]: Toolchain (without parser) took 679.28ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 60.0MB in the beginning and 99.6MB in the end (delta: -39.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:46:18,091 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 69.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:46:18,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.61ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 59.7MB in the beginning and 99.6MB in the end (delta: -39.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:46:18,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 69.1MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 676.61ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 59.7MB in the beginning and 99.6MB in the end (delta: -39.9MB). Peak memory consumption was 8.4MB. 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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:46:20,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:46:20,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:46:20,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:46:20,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:46:20,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:46:20,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:46:20,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:46:20,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:46:20,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:46:20,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:46:20,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:46:20,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:46:20,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:46:20,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:46:20,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:46:20,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:46:20,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:46:20,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:46:20,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:46:20,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:46:20,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:46:20,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:46:20,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:46:20,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:46:20,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:46:20,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:46:20,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:46:20,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:46:20,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:46:20,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:46:20,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:46:20,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:46:20,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:46:20,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:46:20,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:46:20,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:46:20,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:46:20,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:46:20,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:46:20,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:46:20,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:46:20,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:46:20,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:46:20,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:46:20,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:46:20,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:46:20,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:46:20,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:46:20,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:46:20,672 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:46:20,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:46:20,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:46:20,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:46:20,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:46:20,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:46:20,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:46:20,674 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:46:20,674 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:46:20,674 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:46:20,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:46:20,675 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:46:20,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:46:20,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:46:20,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:46:20,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:46:20,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:46:20,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:46:20,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:46:20,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:46:20,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:46:20,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:46:20,677 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:46:20,677 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:46:20,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:46:20,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:46:20,678 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_67e0dc92-b0cd-44ff-90e9-91cb567c95db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2021-11-20 05:46:21,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:46:21,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:46:21,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:46:21,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:46:21,101 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:46:21,103 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2021-11-20 05:46:21,175 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/ab05dcdf8/82ec03aa9c4147c58b0c944d23cca1c2/FLAGa5e55f36b [2021-11-20 05:46:21,952 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:46:21,952 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2021-11-20 05:46:21,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/ab05dcdf8/82ec03aa9c4147c58b0c944d23cca1c2/FLAGa5e55f36b [2021-11-20 05:46:22,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/data/ab05dcdf8/82ec03aa9c4147c58b0c944d23cca1c2 [2021-11-20 05:46:22,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:46:22,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:46:22,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:46:22,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:46:22,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:46:22,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c7c376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22, skipping insertion in model container [2021-11-20 05:46:22,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:46:22,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:46:22,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:46:22,672 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:46:22,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:46:22,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:46:22,755 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:46:22,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:46:22,908 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:46:22,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22 WrapperNode [2021-11-20 05:46:22,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:46:22,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:46:22,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:46:22,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:46:22,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,966 INFO L137 Inliner]: procedures = 167, calls = 92, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 78 [2021-11-20 05:46:22,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:46:22,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:46:22,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:46:22,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:46:22,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:22,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:23,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:23,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:23,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:46:23,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:46:23,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:46:23,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:46:23,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (1/1) ... [2021-11-20 05:46:23,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:46:23,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:46:23,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:46:23,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:46:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:46:23,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:46:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:46:23,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:46:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:46:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:46:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:46:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:46:23,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:46:23,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:46:23,211 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:46:23,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:46:23,596 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:46:23,608 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:46:23,610 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:46:23,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:46:23 BoogieIcfgContainer [2021-11-20 05:46:23,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:46:23,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:46:23,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:46:23,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:46:23,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:46:22" (1/3) ... [2021-11-20 05:46:23,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d3585c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:46:23, skipping insertion in model container [2021-11-20 05:46:23,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:46:22" (2/3) ... [2021-11-20 05:46:23,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d3585c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:46:23, skipping insertion in model container [2021-11-20 05:46:23,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:46:23" (3/3) ... [2021-11-20 05:46:23,623 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test10-2.i [2021-11-20 05:46:23,634 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:46:23,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2021-11-20 05:46:23,697 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:46:23,706 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:46:23,707 INFO L340 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2021-11-20 05:46:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 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 05:46:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:46:23,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:23,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:23,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1192529059, now seen corresponding path program 1 times [2021-11-20 05:46:23,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:23,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168461033] [2021-11-20 05:46:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:23,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:23,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:23,778 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:23,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:46:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:23,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:46:23,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:24,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:24,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:24,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168461033] [2021-11-20 05:46:24,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168461033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:46:24,194 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:46:24,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:46:24,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199095263] [2021-11-20 05:46:24,198 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:46:24,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:46:24,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:24,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:46:24,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:46:24,253 INFO L87 Difference]: Start difference. First operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 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 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:46:24,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:24,568 INFO L93 Difference]: Finished difference Result 180 states and 197 transitions. [2021-11-20 05:46:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:46:24,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 05:46:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:24,587 INFO L225 Difference]: With dead ends: 180 [2021-11-20 05:46:24,589 INFO L226 Difference]: Without dead ends: 176 [2021-11-20 05:46:24,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:46:24,605 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 82 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:24,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 366 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:46:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-20 05:46:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 95. [2021-11-20 05:46:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 46 states have (on average 2.0) internal successors, (92), 88 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-20 05:46:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-11-20 05:46:24,709 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 11 [2021-11-20 05:46:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:24,709 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-11-20 05:46:24,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:46:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-11-20 05:46:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:46:24,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:24,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:24,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 05:46:24,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:24,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2080032740, now seen corresponding path program 1 times [2021-11-20 05:46:24,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:24,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499124080] [2021-11-20 05:46:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:24,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:24,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:24,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:46:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:25,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:46:25,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:25,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:25,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:25,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499124080] [2021-11-20 05:46:25,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499124080] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:46:25,146 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:46:25,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:46:25,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195649146] [2021-11-20 05:46:25,146 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:46:25,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:46:25,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:46:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:46:25,149 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:46:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:25,458 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2021-11-20 05:46:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:46:25,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-20 05:46:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:25,461 INFO L225 Difference]: With dead ends: 163 [2021-11-20 05:46:25,461 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 05:46:25,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:46:25,463 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 63 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:25,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 281 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:46:25,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 05:46:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 91. [2021-11-20 05:46:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 43 states have (on average 2.046511627906977) internal successors, (88), 85 states have internal predecessors, (88), 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 05:46:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2021-11-20 05:46:25,474 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 11 [2021-11-20 05:46:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:25,475 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2021-11-20 05:46:25,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:46:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2021-11-20 05:46:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:46:25,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:25,477 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:25,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:25,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:25,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash -895923568, now seen corresponding path program 1 times [2021-11-20 05:46:25,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:25,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928444414] [2021-11-20 05:46:25,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:25,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:25,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:25,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:46:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:25,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:46:25,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:25,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:46:26,022 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:46:26,022 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 16 treesize of output 21 [2021-11-20 05:46:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:26,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:26,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:26,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [928444414] [2021-11-20 05:46:26,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [928444414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:46:26,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:46:26,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-11-20 05:46:26,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276039849] [2021-11-20 05:46:26,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:46:26,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:46:26,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:46:26,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:46:26,401 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:46:26,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:26,913 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2021-11-20 05:46:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:46:26,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2021-11-20 05:46:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:26,916 INFO L225 Difference]: With dead ends: 129 [2021-11-20 05:46:26,916 INFO L226 Difference]: Without dead ends: 129 [2021-11-20 05:46:26,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:46:26,918 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 65 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:26,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 297 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 297 Invalid, 0 Unknown, 88 Unchecked, 0.5s Time] [2021-11-20 05:46:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-20 05:46:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 102. [2021-11-20 05:46:26,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 93 states have internal predecessors, (104), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-20 05:46:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2021-11-20 05:46:26,944 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 15 [2021-11-20 05:46:26,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:26,944 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2021-11-20 05:46:26,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:46:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2021-11-20 05:46:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:46:26,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:26,949 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:26,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:27,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:27,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:27,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash -895923567, now seen corresponding path program 1 times [2021-11-20 05:46:27,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:27,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848259318] [2021-11-20 05:46:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:27,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:27,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:27,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:46:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:27,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 05:46:27,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:27,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:46:31,563 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:46:31,564 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 12 treesize of output 14 [2021-11-20 05:46:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:31,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:33,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:33,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848259318] [2021-11-20 05:46:33,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848259318] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:46:33,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:46:33,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 05:46:33,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577377507] [2021-11-20 05:46:33,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:46:33,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:46:33,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:46:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=195, Unknown=2, NotChecked=0, Total=240 [2021-11-20 05:46:33,715 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:46:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:34,526 INFO L93 Difference]: Finished difference Result 175 states and 197 transitions. [2021-11-20 05:46:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:46:34,527 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 15 [2021-11-20 05:46:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:34,529 INFO L225 Difference]: With dead ends: 175 [2021-11-20 05:46:34,529 INFO L226 Difference]: Without dead ends: 175 [2021-11-20 05:46:34,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=52, Invalid=218, Unknown=2, NotChecked=0, Total=272 [2021-11-20 05:46:34,530 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 75 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:34,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 1018 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 339 Invalid, 0 Unknown, 303 Unchecked, 0.7s Time] [2021-11-20 05:46:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-20 05:46:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 137. [2021-11-20 05:46:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.9195402298850575) internal successors, (167), 126 states have internal predecessors, (167), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-20 05:46:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 188 transitions. [2021-11-20 05:46:34,555 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 188 transitions. Word has length 15 [2021-11-20 05:46:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:34,557 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 188 transitions. [2021-11-20 05:46:34,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 12 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:46:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 188 transitions. [2021-11-20 05:46:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:46:34,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:34,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:34,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:34,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:34,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:34,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:34,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1602092369, now seen corresponding path program 1 times [2021-11-20 05:46:34,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:34,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705029283] [2021-11-20 05:46:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:34,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:34,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:34,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:46:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:34,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:46:34,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:34,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:34,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:34,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705029283] [2021-11-20 05:46:34,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705029283] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:46:34,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:46:34,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-20 05:46:34,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996141274] [2021-11-20 05:46:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:46:35,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:46:35,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:46:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:46:35,001 INFO L87 Difference]: Start difference. First operand 137 states and 188 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:46:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:35,068 INFO L93 Difference]: Finished difference Result 122 states and 163 transitions. [2021-11-20 05:46:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:46:35,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2021-11-20 05:46:35,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:35,070 INFO L225 Difference]: With dead ends: 122 [2021-11-20 05:46:35,070 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 05:46:35,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:46:35,071 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:35,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:46:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 05:46:35,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-20 05:46:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 112 states have internal predecessors, (147), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:46:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 161 transitions. [2021-11-20 05:46:35,094 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 161 transitions. Word has length 15 [2021-11-20 05:46:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:35,094 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 161 transitions. [2021-11-20 05:46:35,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:46:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 161 transitions. [2021-11-20 05:46:35,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:46:35,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:35,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:35,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:35,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:35,297 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash 684574475, now seen corresponding path program 1 times [2021-11-20 05:46:35,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:35,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354232701] [2021-11-20 05:46:35,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:35,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:35,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:35,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:35,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:46:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:35,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:46:35,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:35,410 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 16 treesize of output 12 [2021-11-20 05:46:35,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-20 05:46:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:35,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:35,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:35,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354232701] [2021-11-20 05:46:35,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354232701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:46:35,547 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:46:35,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:46:35,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831876510] [2021-11-20 05:46:35,548 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:46:35,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:46:35,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:46:35,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:46:35,549 INFO L87 Difference]: Start difference. First operand 120 states and 161 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 05:46:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:35,728 INFO L93 Difference]: Finished difference Result 130 states and 175 transitions. [2021-11-20 05:46:35,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:46:35,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 20 [2021-11-20 05:46:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:35,729 INFO L225 Difference]: With dead ends: 130 [2021-11-20 05:46:35,730 INFO L226 Difference]: Without dead ends: 130 [2021-11-20 05:46:35,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:46:35,731 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 5 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:35,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 406 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:46:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-20 05:46:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-11-20 05:46:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 80 states have (on average 1.8875) internal successors, (151), 115 states have internal predecessors, (151), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:46:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2021-11-20 05:46:35,740 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 20 [2021-11-20 05:46:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:35,740 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2021-11-20 05:46:35,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 05:46:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2021-11-20 05:46:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:46:35,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:35,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:35,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:35,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:35,952 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:35,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1122879988, now seen corresponding path program 1 times [2021-11-20 05:46:35,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842845635] [2021-11-20 05:46:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:35,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:35,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:35,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:35,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:46:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:46:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:36,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:36,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:36,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842845635] [2021-11-20 05:46:36,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842845635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:46:36,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:46:36,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-11-20 05:46:36,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433623426] [2021-11-20 05:46:36,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:46:36,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:46:36,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:36,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:46:36,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:46:36,504 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:46:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:36,814 INFO L93 Difference]: Finished difference Result 127 states and 167 transitions. [2021-11-20 05:46:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:46:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2021-11-20 05:46:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:36,817 INFO L225 Difference]: With dead ends: 127 [2021-11-20 05:46:36,817 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 05:46:36,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:46:36,818 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 151 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:36,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 241 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 10 Unchecked, 0.3s Time] [2021-11-20 05:46:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 05:46:36,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-20 05:46:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 83 states have (on average 1.8433734939759037) internal successors, (153), 117 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:46:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2021-11-20 05:46:36,825 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 20 [2021-11-20 05:46:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:36,826 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2021-11-20 05:46:36,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:46:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2021-11-20 05:46:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 05:46:36,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:36,828 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:36,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:37,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:37,038 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1782681151, now seen corresponding path program 1 times [2021-11-20 05:46:37,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373099230] [2021-11-20 05:46:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:37,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:37,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:37,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:37,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:46:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:37,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:46:37,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:37,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:42,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:46:42,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:42,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373099230] [2021-11-20 05:46:42,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373099230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:46:42,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:46:42,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-11-20 05:46:42,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957105500] [2021-11-20 05:46:42,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:46:42,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:46:42,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:46:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=117, Unknown=9, NotChecked=0, Total=156 [2021-11-20 05:46:42,174 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 2 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 05:46:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:42,586 INFO L93 Difference]: Finished difference Result 137 states and 177 transitions. [2021-11-20 05:46:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:46:42,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2021-11-20 05:46:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:42,588 INFO L225 Difference]: With dead ends: 137 [2021-11-20 05:46:42,588 INFO L226 Difference]: Without dead ends: 130 [2021-11-20 05:46:42,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=36, Invalid=137, Unknown=9, NotChecked=0, Total=182 [2021-11-20 05:46:42,589 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 6 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:42,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 367 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 147 Unchecked, 0.4s Time] [2021-11-20 05:46:42,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-20 05:46:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2021-11-20 05:46:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 79 states have (on average 1.8734177215189873) internal successors, (148), 114 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:46:42,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2021-11-20 05:46:42,597 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 23 [2021-11-20 05:46:42,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:42,597 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2021-11-20 05:46:42,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 4 states have call successors, (4), 2 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 05:46:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2021-11-20 05:46:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:46:42,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:42,599 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:42,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:42,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:42,810 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:42,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:42,810 INFO L85 PathProgramCache]: Analyzing trace with hash -931351798, now seen corresponding path program 1 times [2021-11-20 05:46:42,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:42,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978315534] [2021-11-20 05:46:42,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:42,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:42,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:42,812 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:42,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:46:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:42,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:46:42,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:42,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:46:42,937 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 20 treesize of output 16 [2021-11-20 05:46:42,971 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 05:46:43,072 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:46:43,072 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 17 treesize of output 22 [2021-11-20 05:46:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:43,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:43,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:43,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978315534] [2021-11-20 05:46:43,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978315534] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:46:43,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:46:43,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-11-20 05:46:43,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112085481] [2021-11-20 05:46:43,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:46:43,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:46:43,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:46:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:46:43,366 INFO L87 Difference]: Start difference. First operand 124 states and 162 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:46:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:43,834 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2021-11-20 05:46:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:46:43,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-20 05:46:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:43,837 INFO L225 Difference]: With dead ends: 140 [2021-11-20 05:46:43,837 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 05:46:43,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:46:43,838 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 7 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:43,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 333 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 57 Unchecked, 0.4s Time] [2021-11-20 05:46:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 05:46:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-11-20 05:46:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.8) internal successors, (162), 124 states have internal predecessors, (162), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:46:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 179 transitions. [2021-11-20 05:46:43,848 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 179 transitions. Word has length 25 [2021-11-20 05:46:43,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:43,851 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 179 transitions. [2021-11-20 05:46:43,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:46:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 179 transitions. [2021-11-20 05:46:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:46:43,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:43,858 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:43,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:44,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:44,069 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:44,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:44,069 INFO L85 PathProgramCache]: Analyzing trace with hash -931351797, now seen corresponding path program 1 times [2021-11-20 05:46:44,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:44,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83051987] [2021-11-20 05:46:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:44,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:44,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:44,073 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:44,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:46:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:44,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 05:46:44,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:44,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:46:44,240 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 11 treesize of output 7 [2021-11-20 05:46:44,247 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 17 treesize of output 13 [2021-11-20 05:46:44,310 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 05:46:44,314 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 05:46:48,497 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:46:48,498 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 12 treesize of output 14 [2021-11-20 05:46:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 05:46:48,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:50,697 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 05:46:50,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:50,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83051987] [2021-11-20 05:46:50,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83051987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:46:50,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:46:50,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-20 05:46:50,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049424769] [2021-11-20 05:46:50,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:46:50,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:46:50,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:50,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:46:50,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=256, Unknown=2, NotChecked=0, Total=306 [2021-11-20 05:46:50,699 INFO L87 Difference]: Start difference. First operand 138 states and 179 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 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 05:46:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:51,543 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2021-11-20 05:46:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:46:51,543 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 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 25 [2021-11-20 05:46:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:51,545 INFO L225 Difference]: With dead ends: 140 [2021-11-20 05:46:51,545 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 05:46:51,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=70, Invalid=348, Unknown=2, NotChecked=0, Total=420 [2021-11-20 05:46:51,546 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 14 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:51,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 813 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 222 Unchecked, 0.6s Time] [2021-11-20 05:46:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 05:46:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-11-20 05:46:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.7777777777777777) internal successors, (160), 124 states have internal predecessors, (160), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:46:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 177 transitions. [2021-11-20 05:46:51,555 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 177 transitions. Word has length 25 [2021-11-20 05:46:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:51,555 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 177 transitions. [2021-11-20 05:46:51,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 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 05:46:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 177 transitions. [2021-11-20 05:46:51,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:46:51,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:51,559 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:51,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:51,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:51,771 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1436910423, now seen corresponding path program 1 times [2021-11-20 05:46:51,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:51,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988844941] [2021-11-20 05:46:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:51,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:51,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:51,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:51,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:46:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:51,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:46:51,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:51,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 05:46:51,923 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 11 treesize of output 7 [2021-11-20 05:46:51,961 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 29 treesize of output 21 [2021-11-20 05:46:51,965 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 18 treesize of output 10 [2021-11-20 05:46:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:52,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:46:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:46:52,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:46:52,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988844941] [2021-11-20 05:46:52,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988844941] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:46:52,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:46:52,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-11-20 05:46:52,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003937207] [2021-11-20 05:46:52,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:46:52,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:46:52,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:46:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:46:52,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:46:52,109 INFO L87 Difference]: Start difference. First operand 138 states and 177 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:46:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:46:52,251 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2021-11-20 05:46:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:46:52,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-11-20 05:46:52,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:46:52,253 INFO L225 Difference]: With dead ends: 132 [2021-11-20 05:46:52,253 INFO L226 Difference]: Without dead ends: 126 [2021-11-20 05:46:52,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:46:52,254 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 2 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:46:52,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 398 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:46:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-20 05:46:52,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2021-11-20 05:46:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 80 states have (on average 1.8125) internal successors, (145), 114 states have internal predecessors, (145), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:46:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2021-11-20 05:46:52,260 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 25 [2021-11-20 05:46:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:46:52,261 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2021-11-20 05:46:52,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:46:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2021-11-20 05:46:52,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:46:52,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:46:52,262 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 05:46:52,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:46:52,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:46:52,473 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:46:52,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1675880117, now seen corresponding path program 1 times [2021-11-20 05:46:52,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:46:52,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145361580] [2021-11-20 05:46:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:52,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:46:52,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:46:52,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:46:52,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:46:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:46:52,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:46:52,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:46:52,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:46:52,688 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:46:52,689 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 05:46:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:46:52,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:47:03,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145361580] [2021-11-20 05:47:03,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145361580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:47:03,263 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:47:03,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2021-11-20 05:47:03,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899234357] [2021-11-20 05:47:03,263 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:47:03,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:47:03,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:47:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=57, Unknown=5, NotChecked=0, Total=90 [2021-11-20 05:47:03,265 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:47:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:03,277 INFO L93 Difference]: Finished difference Result 123 states and 157 transitions. [2021-11-20 05:47:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:47:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 27 [2021-11-20 05:47:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:03,279 INFO L225 Difference]: With dead ends: 123 [2021-11-20 05:47:03,279 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 05:47:03,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=28, Invalid=57, Unknown=5, NotChecked=0, Total=90 [2021-11-20 05:47:03,280 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 8 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:03,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 196 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 98 Unchecked, 0.0s Time] [2021-11-20 05:47:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 05:47:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-20 05:47:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 80 states have (on average 1.8) internal successors, (144), 113 states have internal predecessors, (144), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:47:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 157 transitions. [2021-11-20 05:47:03,290 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 157 transitions. Word has length 27 [2021-11-20 05:47:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:03,291 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 157 transitions. [2021-11-20 05:47:03,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:47:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 157 transitions. [2021-11-20 05:47:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:47:03,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:03,293 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 05:47:03,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:03,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:03,495 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:47:03,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:03,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1675880116, now seen corresponding path program 1 times [2021-11-20 05:47:03,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:03,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445994248] [2021-11-20 05:47:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:03,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:03,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:03,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:03,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:47:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:03,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 05:47:03,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:03,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:47:03,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:47:03,849 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:47:03,850 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 31 treesize of output 33 [2021-11-20 05:47:03,861 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:47:03,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-20 05:47:04,025 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:47:04,026 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 31 treesize of output 33 [2021-11-20 05:47:04,040 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:47:04,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-11-20 05:47:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:47:04,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:12,213 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5| (_ BitVec 32)) (|v_ldv_malloc_#res.base_101| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_101|)))) (exists ((|v_ULTIMATE.start_entry_point_#t~ret48#1.base_19| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_19|))))))) (or (not (bvule |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5|))) (exists ((v_ldv_malloc_~size_93 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5|) (select (store |c_old(#length)| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_19| v_ldv_malloc_~size_93) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13|))))))) (and (forall ((ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5|) (select (store |c_#length| |v_ldv_malloc_#res.base_101| ldv_malloc_~size) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_13|))) (bvule |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5| (bvadd (_ bv4 32) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_5|))))) is different from true [2021-11-20 05:47:13,012 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 05:47:13,013 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 35 treesize of output 34 [2021-11-20 05:47:26,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2021-11-20 05:47:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-20 05:47:26,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:26,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445994248] [2021-11-20 05:47:26,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445994248] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:47:26,927 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:47:26,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2021-11-20 05:47:26,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696180865] [2021-11-20 05:47:26,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:47:26,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:47:26,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:47:26,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=225, Unknown=7, NotChecked=30, Total=306 [2021-11-20 05:47:26,929 INFO L87 Difference]: Start difference. First operand 123 states and 157 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 3 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:47:27,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:27,538 INFO L93 Difference]: Finished difference Result 142 states and 176 transitions. [2021-11-20 05:47:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:47:27,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 3 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 27 [2021-11-20 05:47:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:27,541 INFO L225 Difference]: With dead ends: 142 [2021-11-20 05:47:27,541 INFO L226 Difference]: Without dead ends: 142 [2021-11-20 05:47:27,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=66, Invalid=311, Unknown=7, NotChecked=36, Total=420 [2021-11-20 05:47:27,542 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 92 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:27,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 382 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 221 Invalid, 0 Unknown, 411 Unchecked, 0.4s Time] [2021-11-20 05:47:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-20 05:47:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 124. [2021-11-20 05:47:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 82 states have (on average 1.7439024390243902) internal successors, (143), 113 states have internal predecessors, (143), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:47:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 156 transitions. [2021-11-20 05:47:27,561 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 156 transitions. Word has length 27 [2021-11-20 05:47:27,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:27,562 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 156 transitions. [2021-11-20 05:47:27,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 3 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:47:27,562 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 156 transitions. [2021-11-20 05:47:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 05:47:27,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:27,564 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] [2021-11-20 05:47:27,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:27,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:27,776 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:47:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash -412676065, now seen corresponding path program 1 times [2021-11-20 05:47:27,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:27,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409931880] [2021-11-20 05:47:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:27,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:27,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:27,778 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:27,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:47:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:27,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:47:27,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:27,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:47:27,946 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:47:27,946 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 05:47:27,965 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 16 treesize of output 12 [2021-11-20 05:47:30,038 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_7| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_16| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_7|)))) is different from true [2021-11-20 05:47:30,120 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:47:30,120 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2021-11-20 05:47:30,160 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 32 treesize of output 20 [2021-11-20 05:47:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-20 05:47:30,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:30,240 INFO L354 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2021-11-20 05:47:30,241 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 39 treesize of output 38 [2021-11-20 05:47:46,376 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem47#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.base| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (= (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_entry_point_#t~mem47#1.offset| |ULTIMATE.start_entry_point_#t~ret48#1.base|)) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) .cse0))) is different from false [2021-11-20 05:47:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:47:46,544 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409931880] [2021-11-20 05:47:46,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409931880] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:47:46,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:47:46,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 16 [2021-11-20 05:47:46,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177447610] [2021-11-20 05:47:46,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:47:46,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 05:47:46,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 05:47:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=8, NotChecked=54, Total=272 [2021-11-20 05:47:46,547 INFO L87 Difference]: Start difference. First operand 124 states and 156 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:47:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:55,675 INFO L93 Difference]: Finished difference Result 156 states and 186 transitions. [2021-11-20 05:47:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:47:55,675 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2021-11-20 05:47:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:55,677 INFO L225 Difference]: With dead ends: 156 [2021-11-20 05:47:55,677 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 05:47:55,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=82, Invalid=422, Unknown=10, NotChecked=86, Total=600 [2021-11-20 05:47:55,678 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 85 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:55,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 600 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 568 Invalid, 0 Unknown, 307 Unchecked, 0.9s Time] [2021-11-20 05:47:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 05:47:55,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 123. [2021-11-20 05:47:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 82 states have (on average 1.7195121951219512) internal successors, (141), 112 states have internal predecessors, (141), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:47:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 154 transitions. [2021-11-20 05:47:55,684 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 154 transitions. Word has length 28 [2021-11-20 05:47:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:55,685 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 154 transitions. [2021-11-20 05:47:55,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 15 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:47:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 154 transitions. [2021-11-20 05:47:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 05:47:55,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:55,686 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] [2021-11-20 05:47:55,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-20 05:47:55,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:55,906 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:47:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash -412676064, now seen corresponding path program 1 times [2021-11-20 05:47:55,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:55,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026416926] [2021-11-20 05:47:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:55,907 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:55,908 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:55,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:47:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:55,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 05:47:55,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:55,984 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 05:47:56,074 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:47:56,074 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 20 treesize of output 20 [2021-11-20 05:47:56,101 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 11 treesize of output 7 [2021-11-20 05:47:56,109 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 16 treesize of output 12 [2021-11-20 05:47:56,383 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:47:56,384 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 59 [2021-11-20 05:47:56,399 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:47:56,399 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2021-11-20 05:47:56,463 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 33 [2021-11-20 05:47:56,468 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 30 treesize of output 18 [2021-11-20 05:47:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:56,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:56,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:47:56,698 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 70 treesize of output 74 [2021-11-20 05:48:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:48:02,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:02,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026416926] [2021-11-20 05:48:02,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026416926] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:48:02,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:48:02,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2021-11-20 05:48:02,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375765438] [2021-11-20 05:48:02,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:48:02,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:48:02,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:48:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=327, Unknown=2, NotChecked=0, Total=380 [2021-11-20 05:48:02,270 INFO L87 Difference]: Start difference. First operand 123 states and 154 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:48:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:03,437 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2021-11-20 05:48:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 05:48:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 28 [2021-11-20 05:48:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:03,439 INFO L225 Difference]: With dead ends: 135 [2021-11-20 05:48:03,439 INFO L226 Difference]: Without dead ends: 135 [2021-11-20 05:48:03,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=114, Invalid=640, Unknown=2, NotChecked=0, Total=756 [2021-11-20 05:48:03,440 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 126 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:03,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 575 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 354 Invalid, 0 Unknown, 189 Unchecked, 0.8s Time] [2021-11-20 05:48:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-20 05:48:03,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2021-11-20 05:48:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 82 states have (on average 1.6951219512195121) internal successors, (139), 111 states have internal predecessors, (139), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:48:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 152 transitions. [2021-11-20 05:48:03,446 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 152 transitions. Word has length 28 [2021-11-20 05:48:03,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:03,447 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 152 transitions. [2021-11-20 05:48:03,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:48:03,447 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 152 transitions. [2021-11-20 05:48:03,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:48:03,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:03,448 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] [2021-11-20 05:48:03,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-20 05:48:03,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:03,659 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:48:03,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706688, now seen corresponding path program 1 times [2021-11-20 05:48:03,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:03,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117475312] [2021-11-20 05:48:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:03,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:03,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:03,661 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:03,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:48:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:03,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:48:03,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:03,823 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 05:48:03,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:03,893 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 05:48:03,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:03,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117475312] [2021-11-20 05:48:03,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117475312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:48:03,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:48:03,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:48:03,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073048832] [2021-11-20 05:48:03,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:48:03,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:48:03,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:48:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:48:03,896 INFO L87 Difference]: Start difference. First operand 122 states and 152 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 05:48:04,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:04,090 INFO L93 Difference]: Finished difference Result 121 states and 150 transitions. [2021-11-20 05:48:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:48:04,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 30 [2021-11-20 05:48:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:04,092 INFO L225 Difference]: With dead ends: 121 [2021-11-20 05:48:04,092 INFO L226 Difference]: Without dead ends: 121 [2021-11-20 05:48:04,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:48:04,093 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:04,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 125 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:48:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-20 05:48:04,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-20 05:48:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.670731707317073) internal successors, (137), 110 states have internal predecessors, (137), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:48:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2021-11-20 05:48:04,098 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 30 [2021-11-20 05:48:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:04,099 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2021-11-20 05:48:04,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 05:48:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2021-11-20 05:48:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 05:48:04,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:04,101 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] [2021-11-20 05:48:04,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:04,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:04,302 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:48:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706687, now seen corresponding path program 1 times [2021-11-20 05:48:04,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:04,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903894493] [2021-11-20 05:48:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:04,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:04,304 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:04,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:48:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:04,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:48:04,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:48:04,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:04,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:48:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 05:48:04,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:04,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903894493] [2021-11-20 05:48:04,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903894493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:48:04,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:48:04,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-11-20 05:48:04,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272473424] [2021-11-20 05:48:04,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:48:04,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:48:04,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:04,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:48:04,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:48:04,816 INFO L87 Difference]: Start difference. First operand 121 states and 150 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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 05:48:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:05,293 INFO L93 Difference]: Finished difference Result 119 states and 147 transitions. [2021-11-20 05:48:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:48:05,294 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), 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 30 [2021-11-20 05:48:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:05,295 INFO L225 Difference]: With dead ends: 119 [2021-11-20 05:48:05,295 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 05:48:05,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:48:05,296 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 147 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:05,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 335 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:48:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 05:48:05,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 110. [2021-11-20 05:48:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.5890410958904109) internal successors, (116), 99 states have internal predecessors, (116), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:48:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2021-11-20 05:48:05,301 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 30 [2021-11-20 05:48:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:05,302 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2021-11-20 05:48:05,302 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), 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 05:48:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2021-11-20 05:48:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:48:05,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:05,303 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 05:48:05,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:05,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:05,514 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:48:05,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:05,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234894, now seen corresponding path program 1 times [2021-11-20 05:48:05,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:05,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648278194] [2021-11-20 05:48:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:05,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:05,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:05,516 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:05,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:48:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:05,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 05:48:05,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:05,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:48:05,687 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:48:05,687 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 05:48:05,709 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 16 treesize of output 12 [2021-11-20 05:48:05,715 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 11 treesize of output 7 [2021-11-20 05:48:07,810 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_15| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_15|)))) is different from true [2021-11-20 05:48:09,957 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:48:09,957 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 45 [2021-11-20 05:48:09,975 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:48:09,976 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 42 [2021-11-20 05:48:10,027 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 31 [2021-11-20 05:48:10,079 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:48:10,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2021-11-20 05:48:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-20 05:48:10,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:45,132 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25| (_ BitVec 32))) (or (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |c_ldv_malloc_#res.base|)))) (select .cse0 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ldv_malloc_#res.base_153| (_ BitVec 32))) (and (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |v_ldv_malloc_#res.base_153|)))) (select .cse1 (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32)) (not (= |v_ldv_malloc_#res.base_153| (_ bv0 32))))))) is different from false [2021-11-20 05:48:47,469 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ldv_malloc_#res.base_154| (_ BitVec 32))) (or (= |v_ldv_malloc_#res.base_154| (_ bv0 32)) (forall ((|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25| (_ BitVec 32))) (or (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |v_ldv_malloc_#res.base_154|)))) (select .cse0 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ldv_malloc_#res.base_153| (_ BitVec 32))) (and (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |v_ldv_malloc_#res.base_153|)))) (select .cse1 (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32)) (not (= |v_ldv_malloc_#res.base_153| (_ bv0 32))))))))) is different from false [2021-11-20 05:48:49,493 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ldv_malloc_#res.base_153| (_ BitVec 32))) (or (not (= (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) .cse2 |v_ldv_malloc_#res.base_153|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) .cse2 |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (_ bv0 32))) (= |v_ldv_malloc_#res.base_153| (_ bv0 32)))) is different from false [2021-11-20 05:48:49,583 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:48:49,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 994 treesize of output 874 [2021-11-20 05:48:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2021-11-20 05:48:50,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:50,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648278194] [2021-11-20 05:48:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648278194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:48:50,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:48:50,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2021-11-20 05:48:50,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428696944] [2021-11-20 05:48:50,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:48:50,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 05:48:50,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:50,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 05:48:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=325, Unknown=14, NotChecked=114, Total=506 [2021-11-20 05:48:50,081 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:48:52,110 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ldv_malloc_#res.base|))) (forall ((|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25| (_ BitVec 32))) (or (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |c_ldv_malloc_#res.base|)))) (select .cse0 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ldv_malloc_#res.base_153| (_ BitVec 32))) (and (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |v_ldv_malloc_#res.base_153|)))) (select .cse1 (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32)) (not (= |v_ldv_malloc_#res.base_153| (_ bv0 32)))))))) is different from false [2021-11-20 05:48:54,163 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ldv_malloc_#res.base|))) (forall ((|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25| (_ BitVec 32))) (or (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |c_ldv_malloc_#res.base|)))) (select .cse0 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ldv_malloc_#res.base_153| (_ BitVec 32))) (and (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |v_ldv_malloc_#res.base_153|)))) (select .cse1 (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32)) (not (= |v_ldv_malloc_#res.base_153| (_ bv0 32))))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |c_ldv_malloc_#res.base|))))))) is different from false [2021-11-20 05:48:58,501 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_15| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_24|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_15|)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ldv_malloc_#res.base|))) (forall ((|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25| (_ BitVec 32))) (or (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |c_ldv_malloc_#res.base|)))) (select .cse0 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ldv_malloc_#res.base_153| (_ BitVec 32))) (and (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |v_ldv_malloc_#res.base_153|)))) (select .cse1 (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_6| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_16|)) (_ bv0 32)) (not (= |v_ldv_malloc_#res.base_153| (_ bv0 32))))))) (not (= |c_ldv_malloc_#res.base| (_ bv0 32)))) is different from false [2021-11-20 05:48:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:58,908 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2021-11-20 05:48:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 05:48:58,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2021-11-20 05:48:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:58,910 INFO L225 Difference]: With dead ends: 110 [2021-11-20 05:48:58,910 INFO L226 Difference]: Without dead ends: 110 [2021-11-20 05:48:58,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=94, Invalid=512, Unknown=18, NotChecked=306, Total=930 [2021-11-20 05:48:58,911 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 22 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:58,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 641 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 285 Invalid, 0 Unknown, 341 Unchecked, 0.4s Time] [2021-11-20 05:48:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-20 05:48:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-11-20 05:48:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.5753424657534247) internal successors, (115), 99 states have internal predecessors, (115), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:48:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2021-11-20 05:48:58,917 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 31 [2021-11-20 05:48:58,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:58,917 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2021-11-20 05:48:58,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:48:58,918 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2021-11-20 05:48:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:48:58,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:58,918 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 05:48:58,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-20 05:48:59,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:59,130 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:48:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234347, now seen corresponding path program 1 times [2021-11-20 05:48:59,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868750459] [2021-11-20 05:48:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:59,131 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:59,132 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:59,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:48:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:59,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:48:59,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:59,309 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 23 treesize of output 15 [2021-11-20 05:48:59,327 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 05:48:59,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:59,376 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-20 05:48:59,376 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 21 [2021-11-20 05:48:59,428 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 05:48:59,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:59,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868750459] [2021-11-20 05:48:59,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868750459] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:48:59,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:48:59,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:48:59,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555896063] [2021-11-20 05:48:59,429 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:48:59,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:48:59,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:48:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:48:59,430 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 05:48:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:59,757 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2021-11-20 05:48:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:48:59,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 05:48:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:59,758 INFO L225 Difference]: With dead ends: 115 [2021-11-20 05:48:59,758 INFO L226 Difference]: Without dead ends: 115 [2021-11-20 05:48:59,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:48:59,760 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:59,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 221 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:48:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-20 05:48:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2021-11-20 05:48:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.547945205479452) internal successors, (113), 98 states have internal predecessors, (113), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:48:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 126 transitions. [2021-11-20 05:48:59,765 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 126 transitions. Word has length 31 [2021-11-20 05:48:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:59,766 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 126 transitions. [2021-11-20 05:48:59,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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 05:48:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 126 transitions. [2021-11-20 05:48:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:48:59,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:59,767 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 05:48:59,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:59,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:59,971 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:48:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234346, now seen corresponding path program 1 times [2021-11-20 05:48:59,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:59,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438517492] [2021-11-20 05:48:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:59,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:59,973 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:59,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:49:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:00,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:49:00,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:49:00,234 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 43 treesize of output 35 [2021-11-20 05:49:00,238 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 32 treesize of output 16 [2021-11-20 05:49:00,307 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 05:49:00,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:49:00,364 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:49:00,364 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 38 treesize of output 42 [2021-11-20 05:49:00,616 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 05:49:00,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:49:00,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438517492] [2021-11-20 05:49:00,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438517492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:00,616 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:00,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-20 05:49:00,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6178834] [2021-11-20 05:49:00,617 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:00,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:49:00,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:49:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:49:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:49:00,618 INFO L87 Difference]: Start difference. First operand 109 states and 126 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 05:49:01,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:49:01,461 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2021-11-20 05:49:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:49:01,462 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 31 [2021-11-20 05:49:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:49:01,463 INFO L225 Difference]: With dead ends: 121 [2021-11-20 05:49:01,463 INFO L226 Difference]: Without dead ends: 121 [2021-11-20 05:49:01,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:49:01,464 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 20 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:49:01,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 287 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:49:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-20 05:49:01,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 108. [2021-11-20 05:49:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 97 states have internal predecessors, (111), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:49:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2021-11-20 05:49:01,469 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 31 [2021-11-20 05:49:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:49:01,469 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2021-11-20 05:49:01,470 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 05:49:01,470 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2021-11-20 05:49:01,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 05:49:01,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:49:01,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:01,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:49:01,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:49:01,682 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:49:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -2032748399, now seen corresponding path program 1 times [2021-11-20 05:49:01,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:49:01,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601702858] [2021-11-20 05:49:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:01,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:49:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:49:01,684 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:49:01,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:49:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:01,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:49:01,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:49:01,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:49:01,879 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:49:01,879 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 05:49:01,920 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 11 treesize of output 7 [2021-11-20 05:49:01,928 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 16 treesize of output 12 [2021-11-20 05:49:02,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-20 05:49:02,200 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:49:02,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 05:49:02,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 05:49:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:02,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:49:04,324 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem47#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |ULTIMATE.start_entry_point_#t~mem47#1.offset| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv0 32))) is different from false [2021-11-20 05:49:06,349 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem47#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32))) (= (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_entry_point_#t~mem47#1.offset| |ULTIMATE.start_entry_point_#t~ret48#1.offset|))) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv0 32))) is different from false [2021-11-20 05:49:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:49:06,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:49:06,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601702858] [2021-11-20 05:49:06,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601702858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:49:06,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:49:06,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 16 [2021-11-20 05:49:06,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151271497] [2021-11-20 05:49:06,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:49:06,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 05:49:06,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:49:06,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 05:49:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=178, Unknown=2, NotChecked=54, Total=272 [2021-11-20 05:49:06,680 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:49:11,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:49:11,446 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-11-20 05:49:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 05:49:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 31 [2021-11-20 05:49:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:49:11,449 INFO L225 Difference]: With dead ends: 120 [2021-11-20 05:49:11,449 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 05:49:11,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=89, Invalid=423, Unknown=2, NotChecked=86, Total=600 [2021-11-20 05:49:11,450 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 61 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:49:11,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 508 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 292 Invalid, 0 Unknown, 239 Unchecked, 0.4s Time] [2021-11-20 05:49:11,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 05:49:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 109. [2021-11-20 05:49:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.5135135135135136) internal successors, (112), 98 states have internal predecessors, (112), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:49:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2021-11-20 05:49:11,455 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 31 [2021-11-20 05:49:11,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:49:11,456 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2021-11-20 05:49:11,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:49:11,456 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2021-11-20 05:49:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:49:11,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:49:11,457 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:11,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:49:11,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:49:11,663 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:49:11,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1409309198, now seen corresponding path program 1 times [2021-11-20 05:49:11,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:49:11,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540371394] [2021-11-20 05:49:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:11,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:49:11,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:49:11,665 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:49:11,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 05:49:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:11,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:49:11,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:49:11,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:49:11,856 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:49:11,857 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 20 treesize of output 20 [2021-11-20 05:49:11,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-20 05:49:12,156 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:49:12,157 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 25 [2021-11-20 05:49:12,200 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 23 treesize of output 11 [2021-11-20 05:49:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:12,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:49:24,749 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~mem47#1.offset| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.base| (_ BitVec 32))) (bvult (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_entry_point_#t~mem47#1.offset| |ULTIMATE.start_entry_point_#t~ret48#1.base|))) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2021-11-20 05:49:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:49:25,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:49:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540371394] [2021-11-20 05:49:25,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540371394] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:49:25,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:49:25,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-11-20 05:49:25,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418929558] [2021-11-20 05:49:25,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:49:25,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 05:49:25,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:49:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 05:49:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=258, Unknown=6, NotChecked=32, Total=342 [2021-11-20 05:49:25,145 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 19 states, 18 states have (on average 2.5) internal successors, (45), 16 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:49:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:49:38,645 INFO L93 Difference]: Finished difference Result 139 states and 154 transitions. [2021-11-20 05:49:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 05:49:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.5) internal successors, (45), 16 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 32 [2021-11-20 05:49:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:49:38,646 INFO L225 Difference]: With dead ends: 139 [2021-11-20 05:49:38,647 INFO L226 Difference]: Without dead ends: 139 [2021-11-20 05:49:38,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=119, Invalid=579, Unknown=8, NotChecked=50, Total=756 [2021-11-20 05:49:38,648 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 122 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:49:38,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 545 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 578 Invalid, 0 Unknown, 232 Unchecked, 0.9s Time] [2021-11-20 05:49:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-20 05:49:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 110. [2021-11-20 05:49:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.5066666666666666) internal successors, (113), 99 states have internal predecessors, (113), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:49:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2021-11-20 05:49:38,653 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 32 [2021-11-20 05:49:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:49:38,653 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2021-11-20 05:49:38,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.5) internal successors, (45), 16 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:49:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2021-11-20 05:49:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 05:49:38,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:49:38,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:49:38,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:49:38,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:49:38,863 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:49:38,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 738912307, now seen corresponding path program 1 times [2021-11-20 05:49:38,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:49:38,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450526704] [2021-11-20 05:49:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:38,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:49:38,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:49:38,865 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:49:38,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 05:49:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:38,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:49:38,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:49:38,999 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 05:49:39,015 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 05:49:39,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:49:39,052 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-20 05:49:39,052 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 21 [2021-11-20 05:49:39,094 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 05:49:39,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:49:39,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450526704] [2021-11-20 05:49:39,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450526704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:39,094 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:39,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:49:39,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312788411] [2021-11-20 05:49:39,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:39,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:49:39,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:49:39,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:49:39,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:49:39,096 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 05:49:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:49:39,304 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2021-11-20 05:49:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:49:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 05:49:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:49:39,306 INFO L225 Difference]: With dead ends: 111 [2021-11-20 05:49:39,306 INFO L226 Difference]: Without dead ends: 111 [2021-11-20 05:49:39,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:49:39,307 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 6 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:49:39,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 182 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:49:39,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-20 05:49:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-11-20 05:49:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 76 states have (on average 1.5) internal successors, (114), 100 states have internal predecessors, (114), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:49:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-11-20 05:49:39,312 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 33 [2021-11-20 05:49:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:49:39,312 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-11-20 05:49:39,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 05:49:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-11-20 05:49:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 05:49:39,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:49:39,313 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] [2021-11-20 05:49:39,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 05:49:39,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:49:39,525 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:49:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014625, now seen corresponding path program 1 times [2021-11-20 05:49:39,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:49:39,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580071895] [2021-11-20 05:49:39,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:39,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:49:39,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:49:39,527 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:49:39,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 05:49:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:39,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 05:49:39,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:49:39,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:49:39,713 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:49:39,713 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 05:49:39,736 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 16 treesize of output 12 [2021-11-20 05:49:41,813 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_21| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_21|)))) is different from true [2021-11-20 05:49:41,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:49:46,002 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:49:46,002 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 50 [2021-11-20 05:49:46,026 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:49:46,026 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 47 [2021-11-20 05:49:46,174 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 47 treesize of output 39 [2021-11-20 05:49:46,247 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:49:46,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 24 [2021-11-20 05:49:46,387 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:49:46,388 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 05:49:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2021-11-20 05:49:46,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:50:25,419 INFO L354 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2021-11-20 05:50:25,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 189 [2021-11-20 05:50:27,435 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ldv_malloc_#res.base_218| (_ BitVec 32))) (= |v_ldv_malloc_#res.base_218| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |v_ldv_malloc_#res.base_218|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2021-11-20 05:51:25,411 INFO L354 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2021-11-20 05:51:25,411 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 271 treesize of output 231 [2021-11-20 05:51:27,529 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_8| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~ret48#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37| (_ BitVec 32)) (|v_ldv_malloc_#res.base_219| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_22| (_ BitVec 32))) (or (exists ((|v_ldv_malloc_#res.base_218| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_8| |v_ldv_malloc_#res.base_218|)))) (select .cse0 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_22|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_8| v_prenex_1)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_22|)) |v_ldv_malloc_#res.base_218|))) (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_8| |v_ldv_malloc_#res.base_219|)))) (select .cse1 (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_22|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_8| |ULTIMATE.start_entry_point_#t~ret48#1.offset|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_22|)) |v_ldv_malloc_#res.base_219|))) is different from false [2021-11-20 05:51:27,537 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 140 treesize of output 112 [2021-11-20 05:51:31,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 05:51:31,824 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 64 treesize of output 60 [2021-11-20 05:51:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 12 refuted. 4 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:38,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:38,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580071895] [2021-11-20 05:51:38,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580071895] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:38,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:38,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 29 [2021-11-20 05:51:38,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721546618] [2021-11-20 05:51:38,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:38,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-20 05:51:38,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-20 05:51:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=635, Unknown=46, NotChecked=106, Total=870 [2021-11-20 05:51:38,062 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 30 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:51:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:53,445 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2021-11-20 05:51:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 05:51:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2021-11-20 05:51:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:53,448 INFO L225 Difference]: With dead ends: 119 [2021-11-20 05:51:53,448 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 05:51:53,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 131.9s TimeCoverageRelationStatistics Valid=153, Invalid=1063, Unknown=52, NotChecked=138, Total=1406 [2021-11-20 05:51:53,449 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 44 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 578 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:53,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 689 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 314 Invalid, 0 Unknown, 578 Unchecked, 0.5s Time] [2021-11-20 05:51:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 05:51:53,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2021-11-20 05:51:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.5) internal successors, (120), 103 states have internal predecessors, (120), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:51:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2021-11-20 05:51:53,455 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 37 [2021-11-20 05:51:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:53,456 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2021-11-20 05:51:53,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 6 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:51:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2021-11-20 05:51:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 05:51:53,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:53,457 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] [2021-11-20 05:51:53,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:53,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:53,669 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:51:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:53,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014624, now seen corresponding path program 1 times [2021-11-20 05:51:53,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:53,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065308248] [2021-11-20 05:51:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:53,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:53,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:53,670 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:53,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 05:51:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:53,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-20 05:51:53,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:53,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:53,876 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:51:53,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-20 05:51:53,901 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 16 treesize of output 12 [2021-11-20 05:51:56,001 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_40| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_23| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_40| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_40|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_23|)))) is different from true [2021-11-20 05:51:58,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:51:58,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:52:00,279 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:52:00,279 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 55 [2021-11-20 05:52:00,299 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:52:00,300 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 60 [2021-11-20 05:52:00,626 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-20 05:52:00,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 50 [2021-11-20 05:52:00,632 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:52:00,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 31 [2021-11-20 05:52:02,942 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:02,943 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 33 treesize of output 35 [2021-11-20 05:52:02,955 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:52:02,955 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 27 treesize of output 27 [2021-11-20 05:52:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-20 05:52:03,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:28,397 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 540 treesize of output 502 [2021-11-20 05:52:28,402 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 502 treesize of output 500 [2021-11-20 05:52:51,790 WARN L227 SmtUtils]: Spent 6.11s 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 05:52:55,077 WARN L860 $PredicateComparison]: unable to prove that (or (not (= (_ bv4 32) |c_ldv_malloc_#in~size|)) (forall ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (_ BitVec 32)) (|v_ldv_malloc_#res.base_230| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_230|))))) (exists ((|v_ldv_malloc_#res.base_234| (_ BitVec 32))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |v_ldv_malloc_#res.base_234|)))) (select .cse0 (select (select .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) |v_ldv_malloc_#res.base_234|))) (exists ((|v_ldv_malloc_#res.base_234| (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |v_ldv_malloc_#res.base_234|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)))) (_ bv4 32)))) (and (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |c_ldv_malloc_#res.offset|)))) (select (select .cse3 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |c_ldv_malloc_#res.base|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (select (select .cse3 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))))) (bvule .cse2 (bvadd .cse2 (_ bv4 32)))) (forall ((v_ldv_malloc_~size_214 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |c_ldv_malloc_#res.offset|))) (.cse7 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |c_ldv_malloc_#res.base|)))) (let ((.cse5 (select (select .cse7 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (.cse6 (select (select .cse4 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))) (bvule (bvadd (select (select .cse4 .cse5) .cse6) (_ bv4 32)) (select (store |c_#length| |v_ldv_malloc_#res.base_230| v_ldv_malloc_~size_214) (select (select .cse7 .cse5) .cse6))))))) (exists ((|v_ldv_malloc_#res.base_234| (_ BitVec 32))) (not (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))))) (select (select .cse9 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |v_ldv_malloc_#res.base_234|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (select (select .cse9 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))))) (bvule .cse8 (bvadd (_ bv4 32) .cse8)))))))) is different from true [2021-11-20 05:52:56,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1228 treesize of output 1152 [2021-11-20 05:52:56,213 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 1152 treesize of output 1150 [2021-11-20 05:52:59,191 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (_ BitVec 32))) (or (and (forall ((|v_ldv_malloc_#res.base_235| (_ BitVec 32))) (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |v_ldv_malloc_#res.base_235|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (select (select .cse1 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ldv_malloc_#res.base_235| (_ BitVec 32))) (= (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |v_ldv_malloc_#res.base_235|)))) (select .cse2 (select (select .cse2 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) |v_ldv_malloc_#res.base_235|)) (forall ((|v_ldv_malloc_#res.base_235| (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))))) (select (select .cse3 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |v_ldv_malloc_#res.base_235|)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (select (select .cse3 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)))) c_ldv_malloc_~size))) (exists ((|v_ldv_malloc_#res.base_234| (_ BitVec 32))) (not (= (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| |v_ldv_malloc_#res.base_234|)))) (select .cse4 (select (select .cse4 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) |v_ldv_malloc_#res.base_234|))) (exists ((v_prenex_2 (_ BitVec 32))) (not (bvule (bvadd (_ bv4 32) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))))) (select (select .cse5 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| v_prenex_2)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (select (select .cse5 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)))) (_ bv4 32)))) (exists ((v_prenex_3 (_ BitVec 32))) (not (let ((.cse6 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| (_ bv0 32))))) (select (select .cse7 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_#t~mem47#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_#t~mem47#1.offset_BEFORE_CALL_10| v_prenex_3)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|)) (select (select .cse7 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_41|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_24|))))) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))))) (not (= (_ bv4 32) |c_ldv_malloc_#in~size|))) is different from true [2021-11-20 05:52:59,760 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-20 05:52:59,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 194 [2021-11-20 05:52:59,891 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 140 treesize of output 112 [2021-11-20 05:53:00,015 INFO L354 Elim1Store]: treesize reduction 27, result has 12.9 percent of original size [2021-11-20 05:53:00,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 310 treesize of output 182 [2021-11-20 05:53:22,548 WARN L227 SmtUtils]: Spent 20.04s on a formula simplification. DAG size of input: 39 DAG size of output: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:53:22,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:53:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 8 not checked. [2021-11-20 05:53:22,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:22,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065308248] [2021-11-20 05:53:22,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065308248] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:22,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:22,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 33 [2021-11-20 05:53:22,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691639628] [2021-11-20 05:53:22,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:22,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 05:53:22,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:22,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 05:53:22,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=831, Unknown=22, NotChecked=180, Total=1122 [2021-11-20 05:53:22,939 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 34 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 27 states have internal predecessors, (50), 6 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:53:35,672 WARN L227 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:53:43,311 WARN L227 SmtUtils]: Spent 7.24s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:54:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:19,305 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-11-20 05:54:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 05:54:19,306 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 27 states have internal predecessors, (50), 6 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2021-11-20 05:54:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:19,307 INFO L225 Difference]: With dead ends: 120 [2021-11-20 05:54:19,307 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 05:54:19,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 132.4s TimeCoverageRelationStatistics Valid=187, Invalid=1603, Unknown=28, NotChecked=252, Total=2070 [2021-11-20 05:54:19,309 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 43 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 755 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:19,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 845 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 365 Invalid, 0 Unknown, 755 Unchecked, 5.1s Time] [2021-11-20 05:54:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 05:54:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2021-11-20 05:54:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.4875) internal successors, (119), 103 states have internal predecessors, (119), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:54:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-11-20 05:54:19,315 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 37 [2021-11-20 05:54:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:19,316 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-11-20 05:54:19,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 27 states have internal predecessors, (50), 6 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:54:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-11-20 05:54:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:54:19,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:19,317 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:54:19,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 05:54:19,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:19,524 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:54:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1229276979, now seen corresponding path program 1 times [2021-11-20 05:54:19,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830079477] [2021-11-20 05:54:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:19,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:19,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:19,526 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:19,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 05:54:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:19,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 05:54:19,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:20,567 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:54:20,568 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 16 treesize of output 21 [2021-11-20 05:54:22,249 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-20 05:54:22,249 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 26 treesize of output 37 [2021-11-20 05:54:25,692 INFO L354 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2021-11-20 05:54:25,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 39 [2021-11-20 05:54:25,730 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 30 treesize of output 22 [2021-11-20 05:54:27,370 INFO L354 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2021-11-20 05:54:27,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 52 [2021-11-20 05:54:28,578 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 05:54:28,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:31,192 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:54:31,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 54 [2021-11-20 05:54:31,233 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 46 treesize of output 38 [2021-11-20 05:57:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 6 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:57:14,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:14,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830079477] [2021-11-20 05:57:14,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830079477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:14,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:57:14,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-11-20 05:57:14,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736144631] [2021-11-20 05:57:14,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:14,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 05:57:14,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 05:57:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=625, Unknown=3, NotChecked=0, Total=756 [2021-11-20 05:57:14,063 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 24 states have internal predecessors, (55), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:57:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:25,081 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-11-20 05:57:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:57:25,082 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 24 states have internal predecessors, (55), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 36 [2021-11-20 05:57:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:25,083 INFO L225 Difference]: With dead ends: 141 [2021-11-20 05:57:25,083 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 05:57:25,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=208, Invalid=979, Unknown=3, NotChecked=0, Total=1190 [2021-11-20 05:57:25,085 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 85 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 426 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:25,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 589 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 386 Invalid, 0 Unknown, 426 Unchecked, 5.7s Time] [2021-11-20 05:57:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 05:57:25,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 119. [2021-11-20 05:57:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 106 states have internal predecessors, (122), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:57:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-11-20 05:57:25,091 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 36 [2021-11-20 05:57:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:25,092 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-11-20 05:57:25,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 24 states have internal predecessors, (55), 5 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:57:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-11-20 05:57:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-20 05:57:25,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:25,093 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-20 05:57:25,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:25,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:25,307 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:57:25,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1653548802, now seen corresponding path program 1 times [2021-11-20 05:57:25,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:25,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353198378] [2021-11-20 05:57:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:25,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:25,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:25,309 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:25,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 05:57:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:25,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 05:57:25,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:25,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:57:26,427 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:57:26,427 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 21 treesize of output 21 [2021-11-20 05:57:26,714 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 16 treesize of output 12 [2021-11-20 05:57:29,514 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_29| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_46| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_46| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_46|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_29|)))) is different from true [2021-11-20 05:57:33,047 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:57:33,047 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2021-11-20 05:57:33,218 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-20 05:57:33,218 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 41 [2021-11-20 05:57:34,566 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-20 05:57:34,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2021-11-20 05:57:34,596 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:57:34,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 17 [2021-11-20 05:57:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-20 05:57:35,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:45,506 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 140 treesize of output 112 [2021-11-20 05:57:46,293 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-20 05:57:46,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 190 [2021-11-20 05:58:07,736 WARN L227 SmtUtils]: Spent 18.32s on a formula simplification. DAG size of input: 27 DAG size of output: 19 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:58:08,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 05:58:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 05:58:09,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:58:09,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353198378] [2021-11-20 05:58:09,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353198378] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:58:09,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:58:09,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2021-11-20 05:58:09,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477793732] [2021-11-20 05:58:09,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:58:09,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 05:58:09,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:58:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 05:58:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=405, Unknown=3, NotChecked=40, Total=506 [2021-11-20 05:58:09,647 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:58:33,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:58:33,125 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2021-11-20 05:58:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 05:58:33,126 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2021-11-20 05:58:33,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:58:33,127 INFO L225 Difference]: With dead ends: 98 [2021-11-20 05:58:33,127 INFO L226 Difference]: Without dead ends: 98 [2021-11-20 05:58:33,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 56.8s TimeCoverageRelationStatistics Valid=123, Invalid=866, Unknown=7, NotChecked=60, Total=1056 [2021-11-20 05:58:33,128 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 33 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:58:33,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 630 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 328 Invalid, 0 Unknown, 237 Unchecked, 4.8s Time] [2021-11-20 05:58:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-20 05:58:33,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-11-20 05:58:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.353846153846154) internal successors, (88), 86 states have internal predecessors, (88), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:58:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-11-20 05:58:33,133 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 37 [2021-11-20 05:58:33,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:58:33,133 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-11-20 05:58:33,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:58:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-11-20 05:58:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 05:58:33,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:58:33,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:33,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:33,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:58:33,355 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 39 more)] === [2021-11-20 05:58:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:58:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash 219174838, now seen corresponding path program 1 times [2021-11-20 05:58:33,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:58:33,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947954448] [2021-11-20 05:58:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:33,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:58:33,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:58:33,359 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:58:33,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 05:58:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:33,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 05:58:33,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:35,258 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 35 treesize of output 31 [2021-11-20 05:58:36,434 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:58:36,435 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 37 treesize of output 29 [2021-11-20 05:58:41,566 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:58:41,566 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 41 [2021-11-20 05:58:42,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 05:58:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:58:45,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:58:50,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:58:50,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947954448] [2021-11-20 05:58:50,463 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-20 05:58:50,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [845622441] [2021-11-20 05:58:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:50,464 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 05:58:50,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/cvc4 [2021-11-20 05:58:50,465 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 05:58:50,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2021-11-20 05:58:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:50,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:58:50,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:50,665 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6909bacc [2021-11-20 05:58:50,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353484361] [2021-11-20 05:58:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:58:50,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:58:50,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:58:50,667 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:58:50,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-20 05:58:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:58:50,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:58:50,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:58:51,449 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@6909bacc [2021-11-20 05:58:51,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:58:51,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-20 05:58:51,450 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-20 05:58:51,450 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-20 05:58:51,458 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (42 of 43 remaining) [2021-11-20 05:58:51,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (41 of 43 remaining) [2021-11-20 05:58:51,461 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (40 of 43 remaining) [2021-11-20 05:58:51,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (39 of 43 remaining) [2021-11-20 05:58:51,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (38 of 43 remaining) [2021-11-20 05:58:51,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (37 of 43 remaining) [2021-11-20 05:58:51,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (36 of 43 remaining) [2021-11-20 05:58:51,462 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (35 of 43 remaining) [2021-11-20 05:58:51,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (34 of 43 remaining) [2021-11-20 05:58:51,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (33 of 43 remaining) [2021-11-20 05:58:51,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (32 of 43 remaining) [2021-11-20 05:58:51,463 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (31 of 43 remaining) [2021-11-20 05:58:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (30 of 43 remaining) [2021-11-20 05:58:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (29 of 43 remaining) [2021-11-20 05:58:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (28 of 43 remaining) [2021-11-20 05:58:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (27 of 43 remaining) [2021-11-20 05:58:51,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (26 of 43 remaining) [2021-11-20 05:58:51,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (25 of 43 remaining) [2021-11-20 05:58:51,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (24 of 43 remaining) [2021-11-20 05:58:51,465 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (23 of 43 remaining) [2021-11-20 05:58:51,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (22 of 43 remaining) [2021-11-20 05:58:51,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (21 of 43 remaining) [2021-11-20 05:58:51,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (20 of 43 remaining) [2021-11-20 05:58:51,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (19 of 43 remaining) [2021-11-20 05:58:51,466 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (18 of 43 remaining) [2021-11-20 05:58:51,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (17 of 43 remaining) [2021-11-20 05:58:51,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (16 of 43 remaining) [2021-11-20 05:58:51,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (15 of 43 remaining) [2021-11-20 05:58:51,467 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (14 of 43 remaining) [2021-11-20 05:58:51,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (13 of 43 remaining) [2021-11-20 05:58:51,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (12 of 43 remaining) [2021-11-20 05:58:51,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (11 of 43 remaining) [2021-11-20 05:58:51,468 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (10 of 43 remaining) [2021-11-20 05:58:51,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (9 of 43 remaining) [2021-11-20 05:58:51,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (8 of 43 remaining) [2021-11-20 05:58:51,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION (7 of 43 remaining) [2021-11-20 05:58:51,469 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION (6 of 43 remaining) [2021-11-20 05:58:51,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (5 of 43 remaining) [2021-11-20 05:58:51,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (4 of 43 remaining) [2021-11-20 05:58:51,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (3 of 43 remaining) [2021-11-20 05:58:51,470 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (2 of 43 remaining) [2021-11-20 05:58:51,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (1 of 43 remaining) [2021-11-20 05:58:51,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (0 of 43 remaining) [2021-11-20 05:58:51,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2021-11-20 05:58:51,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:51,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-20 05:58:52,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:58:52,077 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:58:52,081 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:58:52,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:58:52 BoogieIcfgContainer [2021-11-20 05:58:52,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:58:52,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:58:52,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:58:52,099 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:58:52,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:46:23" (3/4) ... [2021-11-20 05:58:52,103 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:58:52,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:58:52,111 INFO L158 Benchmark]: Toolchain (without parser) took 749968.33ms. Allocated memory was 71.3MB in the beginning and 111.1MB in the end (delta: 39.8MB). Free memory was 52.7MB in the beginning and 71.0MB in the end (delta: -18.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-20 05:58:52,113 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 71.3MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:58:52,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 771.91ms. Allocated memory is still 71.3MB. Free memory was 52.6MB in the beginning and 35.4MB in the end (delta: 17.1MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-11-20 05:58:52,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.52ms. Allocated memory is still 71.3MB. Free memory was 35.4MB in the beginning and 32.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:58:52,114 INFO L158 Benchmark]: Boogie Preprocessor took 38.39ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 32.9MB in the beginning and 74.2MB in the end (delta: -41.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-20 05:58:52,114 INFO L158 Benchmark]: RCFGBuilder took 606.98ms. Allocated memory is still 92.3MB. Free memory was 74.2MB in the beginning and 57.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 05:58:52,115 INFO L158 Benchmark]: TraceAbstraction took 748482.10ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.0MB in the beginning and 71.0MB in the end (delta: -14.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-20 05:58:52,115 INFO L158 Benchmark]: Witness Printer took 5.43ms. Allocated memory is still 111.1MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:58:52,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 71.3MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 771.91ms. Allocated memory is still 71.3MB. Free memory was 52.6MB in the beginning and 35.4MB in the end (delta: 17.1MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.52ms. Allocated memory is still 71.3MB. Free memory was 35.4MB in the beginning and 32.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.39ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 32.9MB in the beginning and 74.2MB in the end (delta: -41.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * RCFGBuilder took 606.98ms. Allocated memory is still 92.3MB. Free memory was 74.2MB in the beginning and 57.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 748482.10ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 57.0MB in the beginning and 71.0MB in the end (delta: -14.0MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 5.43ms. Allocated memory is still 111.1MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 787]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 787. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L788] CALL entry_point() [L773] CALL, EXPR ldv_malloc(sizeof(struct A10)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L773] RET, EXPR ldv_malloc(sizeof(struct A10)) [L773] struct A10 *a10 = (struct A10 *)ldv_malloc(sizeof(struct A10)); [L774] COND FALSE !(!a10) [L775] CALL, EXPR ldv_malloc(sizeof(struct B10)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L775] RET, EXPR ldv_malloc(sizeof(struct B10)) [L775] a10->b = (struct B10 *)ldv_malloc(sizeof(struct B10)) [L776] EXPR a10->b [L776] COND FALSE !(!a10->b) [L777] EXPR a10->b [L777] CALL, EXPR ldv_malloc(sizeof(struct C10)) [L526] COND FALSE !(__VERIFIER_nondet_int()) [L529] return 0; [L777] RET, EXPR ldv_malloc(sizeof(struct C10)) [L777] a10->b->c = (struct C10 *)ldv_malloc(sizeof(struct C10)) [L778] EXPR a10->b [L778] EXPR a10->b->c [L778] COND TRUE !a10->b->c [L783] EXPR a10->b [L783] free(a10->b) [L783] free(a10->b) [L783] free(a10->b) [L785] free(a10) [L785] free(a10) [L785] free(a10) [L788] RET entry_point() - UnprovableResult [Line: 775]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 776]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 776]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 93 locations, 43 error locations. Started 1 CEGAR loops. OverallTime: 748.4s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 150.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1423 SdHoareTripleChecker+Valid, 25.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1410 mSDsluCounter, 12221 SdHoareTripleChecker+Invalid, 23.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4640 IncrementalHoareTripleChecker+Unchecked, 10200 mSDsCounter, 201 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6253 IncrementalHoareTripleChecker+Invalid, 11094 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 201 mSolverCounterUnsat, 2021 mSDtfsCounter, 6253 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1490 GetRequests, 1002 SyntacticMatches, 64 SemanticMatches, 424 ConstructedPredicates, 18 IntricatePredicates, 1 DeprecatedPredicates, 1426 ImplicationChecksByTransitivity, 514.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=9, InterpolantAutomatonStates: 299, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 397 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 587.3s InterpolantComputationTime, 749 NumberOfCodeBlocks, 749 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1405 ConstructedInterpolants, 265 QuantifiedInterpolants, 17577 SizeOfPredicates, 233 NumberOfNonLiveVariables, 2682 ConjunctsInSsa, 372 ConjunctsInUnsatCore, 55 InterpolantComputations, 18 PerfectInterpolantSequences, 351/588 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:58:52,339 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-20 05:58:52,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e0dc92-b0cd-44ff-90e9-91cb567c95db/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN