./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:32,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:32,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:32,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:32,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:32,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:32,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:32,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:32,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:32,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:32,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:32,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:32,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:32,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:32,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:32,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:32,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:32,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:32,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:32,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:32,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:32,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:32,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:32,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:32,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:32,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:32,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:32,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:32,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:32,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:32,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:32,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:32,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:32,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:32,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:32,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:32,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:32,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:32,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:32,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:32,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:32,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:22:32,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:32,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:32,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:32,202 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:32,203 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:32,203 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:32,203 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:32,203 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:32,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:32,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:32,205 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:32,205 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:32,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:32,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:32,205 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:32,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:22:32,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:22:32,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:32,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:32,207 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:22:32,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:32,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:32,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:32,208 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:22:32,208 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:22:32,209 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:22:32,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:32,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:32,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:32,211 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:32,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:32,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:32,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:32,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:32,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:32,212 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:32,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:32,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:32,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:32,213 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 [2021-10-11 02:22:32,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:32,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:32,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:32,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:32,564 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:32,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-11 02:22:32,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/ea5b63b6c/c1eb3305c1f7490681ba9a728281059c/FLAGa94cfe45a [2021-10-11 02:22:33,242 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:33,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-11 02:22:33,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/ea5b63b6c/c1eb3305c1f7490681ba9a728281059c/FLAGa94cfe45a [2021-10-11 02:22:33,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/ea5b63b6c/c1eb3305c1f7490681ba9a728281059c [2021-10-11 02:22:33,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:33,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:33,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:33,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:33,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:33,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:33" (1/1) ... [2021-10-11 02:22:33,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bfbea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:33, skipping insertion in model container [2021-10-11 02:22:33,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:33" (1/1) ... [2021-10-11 02:22:33,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:33,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:33,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:34,004 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) [2021-10-11 02:22:34,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10594f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:34, skipping insertion in model container [2021-10-11 02:22:34,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:34,007 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:22:34,010 INFO L168 Benchmark]: Toolchain (without parser) took 518.23 ms. Allocated memory is still 107.0 MB. Free memory was 63.1 MB in the beginning and 77.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:34,012 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 81.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:34,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.54 ms. Allocated memory is still 107.0 MB. Free memory was 62.9 MB in the beginning and 77.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:34,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 81.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 502.54 ms. Allocated memory is still 107.0 MB. Free memory was 62.9 MB in the beginning and 77.4 MB in the end (delta: -14.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * 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... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:36,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:36,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:36,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:36,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:36,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:36,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:36,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:36,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:36,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:36,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:36,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:36,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:36,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:36,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:36,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:36,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:36,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:36,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:36,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:36,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:36,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:36,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:36,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:36,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:36,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:36,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:36,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:36,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:36,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:36,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:36,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:36,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:36,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:36,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:36,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:36,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:36,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:36,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:36,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:36,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:36,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:22:36,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:36,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:36,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:36,435 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:36,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:36,435 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:36,436 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:36,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:36,436 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:36,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:22:36,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:22:36,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:36,439 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:36,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:22:36,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:36,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:36,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:36,440 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:22:36,440 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:22:36,441 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:22:36,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:36,441 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:36,441 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:22:36,441 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:22:36,442 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:36,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:36,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:36,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:22:36,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:36,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:36,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:36,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:36,444 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:22:36,444 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:22:36,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:36,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:36,445 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_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 [2021-10-11 02:22:36,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:36,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:36,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:36,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:36,858 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:36,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-11 02:22:36,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/069dc16a2/824457a3fe034c24b90145045d5041fe/FLAG3d3792262 [2021-10-11 02:22:37,638 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:37,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-11 02:22:37,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/069dc16a2/824457a3fe034c24b90145045d5041fe/FLAG3d3792262 [2021-10-11 02:22:37,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/data/069dc16a2/824457a3fe034c24b90145045d5041fe [2021-10-11 02:22:37,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:37,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:37,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:37,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:37,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:37,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:37" (1/1) ... [2021-10-11 02:22:37,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35800280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:37, skipping insertion in model container [2021-10-11 02:22:37,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:37" (1/1) ... [2021-10-11 02:22:37,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:37,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:38,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:38,353 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:22:38,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:38,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:38,441 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:38,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:38,683 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:38,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38 WrapperNode [2021-10-11 02:22:38,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:38,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:38,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:38,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:38,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:38,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:38,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:38,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:38,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... [2021-10-11 02:22:38,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:38,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:38,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:38,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:38,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:22:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:22:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:22:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:38,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:39,297 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:39,302 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:22:39,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:39 BoogieIcfgContainer [2021-10-11 02:22:39,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:39,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:39,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:39,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:39,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:37" (1/3) ... [2021-10-11 02:22:39,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:39, skipping insertion in model container [2021-10-11 02:22:39,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:38" (2/3) ... [2021-10-11 02:22:39,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:39, skipping insertion in model container [2021-10-11 02:22:39,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:39" (3/3) ... [2021-10-11 02:22:39,316 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test9.i [2021-10-11 02:22:39,333 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:39,337 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:22:39,350 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:22:39,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:39,388 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:22:39,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:39,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:39,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:39,388 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:39,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:39,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 02:22:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:22:39,411 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:39,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:39,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2021-10-11 02:22:39,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:39,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172314674] [2021-10-11 02:22:39,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:39,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:22:39,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:39,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:39,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172314674] [2021-10-11 02:22:39,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:39,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:39,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868570393] [2021-10-11 02:22:39,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:39,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:39,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:39,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:39,769 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2021-10-11 02:22:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:39,833 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-11 02:22:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:39,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:22:39,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:39,844 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:22:39,844 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:22:39,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:39,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:22:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:22:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:22:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-11 02:22:39,875 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-10-11 02:22:39,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:39,875 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 02:22:39,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-11 02:22:39,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:39,881 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:39,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:40,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,082 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:40,083 INFO L82 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2021-10-11 02:22:40,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:40,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219696324] [2021-10-11 02:22:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:40,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:22:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:40,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:40,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:40,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219696324] [2021-10-11 02:22:40,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:40,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:40,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285754093] [2021-10-11 02:22:40,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:40,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:40,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:40,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:40,252 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2021-10-11 02:22:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:40,337 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-11 02:22:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:40,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:22:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:40,340 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:22:40,340 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:22:40,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:22:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-10-11 02:22:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:22:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-10-11 02:22:40,346 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2021-10-11 02:22:40,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:40,346 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-10-11 02:22:40,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-10-11 02:22:40,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:40,348 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:40,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:40,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:40,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:40,564 INFO L82 PathProgramCache]: Analyzing trace with hash -594059884, now seen corresponding path program 1 times [2021-10-11 02:22:40,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:40,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266427204] [2021-10-11 02:22:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:40,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:40,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:40,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:40,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266427204] [2021-10-11 02:22:40,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:40,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:40,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940689891] [2021-10-11 02:22:40,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:40,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:40,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:40,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:40,644 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2021-10-11 02:22:40,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:40,667 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-11 02:22:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:40,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:22:40,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:40,669 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:22:40,669 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:22:40,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:22:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2021-10-11 02:22:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:22:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-11 02:22:40,675 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2021-10-11 02:22:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:40,675 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-11 02:22:40,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-11 02:22:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:40,676 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:40,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:40,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,892 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:40,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1180938539, now seen corresponding path program 1 times [2021-10-11 02:22:40,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:40,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227805269] [2021-10-11 02:22:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:40,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:22:40,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:41,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:41,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227805269] [2021-10-11 02:22:41,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:41,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:41,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293753646] [2021-10-11 02:22:41,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:41,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:41,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:41,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:41,022 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2021-10-11 02:22:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:41,081 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-11 02:22:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:41,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:22:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:41,086 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:22:41,086 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:22:41,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:41,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:22:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-10-11 02:22:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:22:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-11 02:22:41,093 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2021-10-11 02:22:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:41,095 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-11 02:22:41,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-11 02:22:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:41,096 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:41,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:41,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,315 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785581, now seen corresponding path program 1 times [2021-10-11 02:22:41,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:41,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65117655] [2021-10-11 02:22:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:41,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:22:41,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:41,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:41,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65117655] [2021-10-11 02:22:41,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:41,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:22:41,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708984781] [2021-10-11 02:22:41,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:41,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:41,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:41,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:41,432 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 4 states. [2021-10-11 02:22:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:41,454 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-11 02:22:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:41,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:22:41,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:41,456 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:22:41,456 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:22:41,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:22:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2021-10-11 02:22:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:22:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-11 02:22:41,459 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-10-11 02:22:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:41,459 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-11 02:22:41,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-11 02:22:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:22:41,464 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:41,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:41,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:41,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1182794520, now seen corresponding path program 1 times [2021-10-11 02:22:41,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:41,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486685740] [2021-10-11 02:22:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:41,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:22:41,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:41,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:41,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486685740] [2021-10-11 02:22:41,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:41,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:22:41,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358279975] [2021-10-11 02:22:41,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:22:41,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:41,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:22:41,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:41,783 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2021-10-11 02:22:41,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:41,804 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-11 02:22:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:22:41,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:22:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:41,807 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:22:41,807 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:22:41,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:22:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:22:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:22:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:22:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-11 02:22:41,820 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 9 [2021-10-11 02:22:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:41,821 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-11 02:22:41,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:22:41,821 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-11 02:22:41,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:22:41,821 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:41,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:42,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:42,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:42,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2021-10-11 02:22:42,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:42,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419886263] [2021-10-11 02:22:42,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:42,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:22:42,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:42,147 INFO L382 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 [2021-10-11 02:22:42,148 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:22:42,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:22:42,151 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:22:42,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:22:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:42,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:42,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419886263] [2021-10-11 02:22:42,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:42,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:22:42,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249386412] [2021-10-11 02:22:42,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:22:42,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:42,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:22:42,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:22:42,184 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 4 states. [2021-10-11 02:22:42,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:42,227 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-11 02:22:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:22:42,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:22:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:42,228 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:22:42,228 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:22:42,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:42,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:22:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:22:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:22:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-11 02:22:42,235 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2021-10-11 02:22:42,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:42,235 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-11 02:22:42,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:22:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-11 02:22:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:22:42,237 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:42,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:42,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,461 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:22:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:42,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1655975602, now seen corresponding path program 1 times [2021-10-11 02:22:42,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:22:42,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617603973] [2021-10-11 02:22:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2021-10-11 02:22:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:42,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:22:42,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:42,584 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:22:42,584 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2021-10-11 02:22:42,587 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:22:42,618 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2021-10-11 02:22:42,623 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:42,638 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:22:42,639 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2021-10-11 02:22:42,640 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:42,658 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:22:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:44,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:22:44,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617603973] [2021-10-11 02:22:44,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:44,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:22:44,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267354594] [2021-10-11 02:22:44,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:22:44,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:22:44,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:22:44,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=25, Unknown=1, NotChecked=0, Total=42 [2021-10-11 02:22:44,942 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 7 states. [2021-10-11 02:22:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:47,114 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2021-10-11 02:22:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:22:47,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2021-10-11 02:22:47,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:47,116 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:22:47,116 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:47,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2021-10-11 02:22:47,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:47,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-11 02:22:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:47,117 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:47,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:22:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:47,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:47,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:22:47,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:47 BoogieIcfgContainer [2021-10-11 02:22:47,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:47,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:47,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:47,322 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:47,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:39" (3/4) ... [2021-10-11 02:22:47,326 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:47,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:22:47,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:22:47,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:47,370 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0208fbc-4db5-4bc1-9751-03a913daf25a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:47,370 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:47,371 INFO L168 Benchmark]: Toolchain (without parser) took 9573.51 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 52.1 MB in the beginning and 37.2 MB in the end (delta: 14.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:47,372 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory is still 32.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:47,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 884.41 ms. Allocated memory is still 75.5 MB. Free memory was 51.8 MB in the beginning and 53.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:47,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.30 ms. Allocated memory is still 75.5 MB. Free memory was 53.5 MB in the beginning and 51.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:47,373 INFO L168 Benchmark]: Boogie Preprocessor took 42.67 ms. Allocated memory is still 75.5 MB. Free memory was 51.7 MB in the beginning and 50.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:47,373 INFO L168 Benchmark]: RCFGBuilder took 482.46 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 35.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:47,374 INFO L168 Benchmark]: TraceAbstraction took 8014.13 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 34.6 MB in the beginning and 39.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:47,374 INFO L168 Benchmark]: Witness Printer took 48.04 ms. Allocated memory is still 102.8 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:47,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory is still 32.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 884.41 ms. Allocated memory is still 75.5 MB. Free memory was 51.8 MB in the beginning and 53.9 MB in the end (delta: -2.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.30 ms. Allocated memory is still 75.5 MB. Free memory was 53.5 MB in the beginning and 51.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.67 ms. Allocated memory is still 75.5 MB. Free memory was 51.7 MB in the beginning and 50.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 482.46 ms. Allocated memory is still 75.5 MB. Free memory was 50.0 MB in the beginning and 35.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8014.13 ms. Allocated memory was 75.5 MB in the beginning and 102.8 MB in the end (delta: 27.3 MB). Free memory was 34.6 MB in the beginning and 39.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * Witness Printer took 48.04 ms. Allocated memory is still 102.8 MB. Free memory was 39.3 MB in the beginning and 37.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 775]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 138 SDslu, 91 SDs, 0 SdLazy, 102 SolverSat, 14 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 11 QuantifiedInterpolants, 3558 SizeOfPredicates, 14 NumberOfNonLiveVariables, 296 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...