./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.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_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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_082e662c-489c-4147-bfa1-c9646fadb4e1/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 b6943849e6f46346ed71c5d8e09de50318fefe6a ............................................................................................................................................. 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_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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_082e662c-489c-4147-bfa1-c9646fadb4e1/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 b6943849e6f46346ed71c5d8e09de50318fefe6a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:26:51,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:51,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:51,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:51,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:51,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:51,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:51,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:51,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:51,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:51,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:51,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:51,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:51,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:51,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:51,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:51,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:51,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:51,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:51,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:51,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:51,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:51,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:51,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:51,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:51,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:51,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:51,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:51,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:51,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:51,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:51,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:51,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:51,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:51,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:51,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:51,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:51,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:51,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:51,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:51,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:51,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:26:51,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:51,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:51,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:51,223 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:51,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:51,223 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:51,223 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:51,223 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:51,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:51,224 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:51,224 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:51,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:51,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:51,225 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:51,225 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:51,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:26:51,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:26:51,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:51,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:51,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:26:51,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:51,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:51,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:51,227 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:26:51,228 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:26:51,228 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:26:51,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:51,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:51,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:51,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:51,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:51,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:51,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:51,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:51,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:51,230 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:51,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:51,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:51,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:51,231 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_082e662c-489c-4147-bfa1-c9646fadb4e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2021-10-11 02:26:51,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:51,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:51,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:51,598 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:51,599 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:51,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-11 02:26:51,692 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/e9d8a7745/3d8fb4d58a4846e39b06f36b9f56ef98/FLAGa8a1de24f [2021-10-11 02:26:52,410 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:52,410 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-11 02:26:52,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/e9d8a7745/3d8fb4d58a4846e39b06f36b9f56ef98/FLAGa8a1de24f [2021-10-11 02:26:52,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/e9d8a7745/3d8fb4d58a4846e39b06f36b9f56ef98 [2021-10-11 02:26:52,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:52,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:52,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:52,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:52,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:52,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb25964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52, skipping insertion in model container [2021-10-11 02:26:52,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:52,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:53,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:53,323 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 02:26:53,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4da3b57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:53, skipping insertion in model container [2021-10-11 02:26:53,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:53,326 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:26:53,330 INFO L168 Benchmark]: Toolchain (without parser) took 650.42 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 52.5 MB in the beginning and 93.0 MB in the end (delta: -40.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,332 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 70.7 MB in the beginning and 70.7 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:53,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.52 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 52.3 MB in the beginning and 93.4 MB in the end (delta: -41.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,336 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 70.7 MB in the beginning and 70.7 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 645.52 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 52.3 MB in the beginning and 93.4 MB in the end (delta: -41.1 MB). Peak memory consumption was 4.2 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 02:26:55,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:55,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:55,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:55,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:55,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:55,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:55,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:55,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:55,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:55,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:55,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:55,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:55,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:55,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:55,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:55,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:55,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:55,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:55,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:55,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:55,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:55,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:55,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:55,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:55,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:55,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:55,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:55,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:55,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:55,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:55,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:55,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:55,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:55,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:55,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:55,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:55,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:55,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:55,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:55,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:55,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:26:55,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:55,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:55,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:55,897 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:55,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:55,897 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:55,897 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:55,898 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:55,898 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:55,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:26:55,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:26:55,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:55,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:55,901 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:26:55,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:55,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:55,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:55,902 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:26:55,903 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:26:55,903 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:26:55,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:55,903 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:55,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:26:55,904 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:26:55,904 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:55,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:55,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:55,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:26:55,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:55,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:55,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:55,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:55,906 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:26:55,907 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:26:55,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:55,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:55,908 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_082e662c-489c-4147-bfa1-c9646fadb4e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6943849e6f46346ed71c5d8e09de50318fefe6a [2021-10-11 02:26:56,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:56,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:56,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:56,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:56,365 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:56,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-11 02:26:56,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/8871266f8/bef982eab8c749b98b844e6ed76ce477/FLAG1c35f47ad [2021-10-11 02:26:57,203 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:57,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/sv-benchmarks/c/ldv-memsafety/memleaks_test20-2.i [2021-10-11 02:26:57,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/8871266f8/bef982eab8c749b98b844e6ed76ce477/FLAG1c35f47ad [2021-10-11 02:26:57,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/data/8871266f8/bef982eab8c749b98b844e6ed76ce477 [2021-10-11 02:26:57,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:57,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:57,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:57,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:57,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:57,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:57" (1/1) ... [2021-10-11 02:26:57,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc4a15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:57, skipping insertion in model container [2021-10-11 02:26:57,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:57" (1/1) ... [2021-10-11 02:26:57,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:57,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:58,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:58,130 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:26:58,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:58,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:58,240 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:58,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:58,403 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:58,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58 WrapperNode [2021-10-11 02:26:58,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:58,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:58,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:58,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:58,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:58,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:58,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:58,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:58,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... [2021-10-11 02:26:58,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:58,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:58,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:58,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:58,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:26:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:26:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:26:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:26:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:58,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:58,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:58,936 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:26:58,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:58 BoogieIcfgContainer [2021-10-11 02:26:58,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:58,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:58,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:58,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:58,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:57" (1/3) ... [2021-10-11 02:26:58,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a05a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:58, skipping insertion in model container [2021-10-11 02:26:58,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:58" (2/3) ... [2021-10-11 02:26:58,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a05a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:58, skipping insertion in model container [2021-10-11 02:26:58,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:58" (3/3) ... [2021-10-11 02:26:58,945 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test20-2.i [2021-10-11 02:26:58,960 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:58,964 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:26:58,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:26:59,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:59,006 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:26:59,006 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:59,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:59,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:59,007 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:59,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:59,007 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 02:26:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:59,027 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:59,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:59,028 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:26:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:59,034 INFO L82 PathProgramCache]: Analyzing trace with hash -594039000, now seen corresponding path program 1 times [2021-10-11 02:26:59,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:59,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418433163] [2021-10-11 02:26:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:26:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:59,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:26:59,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:59,339 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 02:26:59,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:59,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418433163] [2021-10-11 02:26:59,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:59,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:26:59,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384075763] [2021-10-11 02:26:59,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:26:59,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:59,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:26:59,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:26:59,363 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2021-10-11 02:26:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:59,651 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-10-11 02:26:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:26:59,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2021-10-11 02:26:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:59,661 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:26:59,662 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:26:59,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:26:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:26:59,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-10-11 02:26:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:26:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-11 02:26:59,702 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 9 [2021-10-11 02:26:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:59,703 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-11 02:26:59,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:26:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-11 02:26:59,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:59,705 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:59,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:59,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:26:59,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:26:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:59,915 INFO L82 PathProgramCache]: Analyzing trace with hash -591268437, now seen corresponding path program 1 times [2021-10-11 02:26:59,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:59,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394959795] [2021-10-11 02:26:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:26:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:59,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:26:59,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:00,025 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 02:27:00,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:00,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394959795] [2021-10-11 02:27:00,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:00,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:00,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794718326] [2021-10-11 02:27:00,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:00,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:00,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:00,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:00,031 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2021-10-11 02:27:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:00,073 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-11 02:27:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:00,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:27:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:00,079 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:27:00,079 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:27:00,080 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 02:27:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:27:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2021-10-11 02:27:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:27:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-11 02:27:00,090 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2021-10-11 02:27:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:00,095 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-11 02:27:00,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-11 02:27:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:00,097 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:00,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:00,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:27:00,308 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:27:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:00,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1183738925, now seen corresponding path program 1 times [2021-10-11 02:27:00,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:00,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234497378] [2021-10-11 02:27:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:27:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:00,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:27:00,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:00,480 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 02:27:00,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:00,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234497378] [2021-10-11 02:27:00,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:00,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:00,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512837589] [2021-10-11 02:27:00,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:00,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:00,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:00,483 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2021-10-11 02:27:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:00,567 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-11 02:27:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:00,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:27:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:00,568 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:27:00,568 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:27:00,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:27:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2021-10-11 02:27:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:27:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-11 02:27:00,572 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2021-10-11 02:27:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:00,573 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-11 02:27:00,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-11 02:27:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:00,574 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:00,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:00,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:27:00,789 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:27:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:00,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1235339760, now seen corresponding path program 1 times [2021-10-11 02:27:00,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:00,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536813559] [2021-10-11 02:27:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:27:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:00,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-11 02:27:00,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:01,057 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 02:27:01,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:01,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536813559] [2021-10-11 02:27:01,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:01,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:27:01,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6298034] [2021-10-11 02:27:01,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:27:01,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:01,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:27:01,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:27:01,060 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2021-10-11 02:27:01,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:01,531 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-10-11 02:27:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:27:01,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2021-10-11 02:27:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:01,532 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:27:01,532 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:27:01,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:27:01,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:27:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-10-11 02:27:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-10-11 02:27:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-10-11 02:27:01,537 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 10 [2021-10-11 02:27:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:01,538 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-11 02:27:01,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:27:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-10-11 02:27:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:01,538 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:01,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:01,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:27:01,752 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:27:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2044686386, now seen corresponding path program 1 times [2021-10-11 02:27:01,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:01,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624877314] [2021-10-11 02:27:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:27:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:01,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:27:01,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:01,859 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 02:27:01,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:01,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624877314] [2021-10-11 02:27:01,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:01,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:01,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896927243] [2021-10-11 02:27:01,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:01,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:01,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:01,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:01,862 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 4 states. [2021-10-11 02:27:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:01,898 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-11 02:27:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:01,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:27:01,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:01,900 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:27:01,900 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:27:01,901 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 02:27:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:27:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-11 02:27:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:27:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-11 02:27:01,904 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2021-10-11 02:27:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:01,904 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-11 02:27:01,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-11 02:27:01,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:01,905 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:01,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:02,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:27:02,121 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:27:02,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:02,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1958790987, now seen corresponding path program 1 times [2021-10-11 02:27:02,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:02,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896886864] [2021-10-11 02:27:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:27:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:02,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:27:02,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:02,195 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 02:27:02,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:02,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896886864] [2021-10-11 02:27:02,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:02,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:02,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980377219] [2021-10-11 02:27:02,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:02,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:02,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:02,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:02,197 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2021-10-11 02:27:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:02,214 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-11 02:27:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:02,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 02:27:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:02,215 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:27:02,215 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:27:02,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 02:27:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:27:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:27:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:27:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-11 02:27:02,218 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 10 [2021-10-11 02:27:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:02,218 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-11 02:27:02,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:02,218 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-11 02:27:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:27:02,219 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:02,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:02,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:27:02,437 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:27:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash 359173162, now seen corresponding path program 1 times [2021-10-11 02:27:02,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:02,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311047784] [2021-10-11 02:27:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:27:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:27:02,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:02,555 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 02:27:02,561 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:02,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:02,564 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:27:02,564 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:27:02,633 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 02:27:02,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:02,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311047784] [2021-10-11 02:27:02,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:02,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:27:02,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162917834] [2021-10-11 02:27:02,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:02,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:02,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:02,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:02,635 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 8 states. [2021-10-11 02:27:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:02,822 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2021-10-11 02:27:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:27:02,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2021-10-11 02:27:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:02,826 INFO L225 Difference]: With dead ends: 14 [2021-10-11 02:27:02,826 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:27:02,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:27:02,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:27:02,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:27:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:27:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2021-10-11 02:27:02,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2021-10-11 02:27:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:02,829 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2021-10-11 02:27:02,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2021-10-11 02:27:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:27:02,829 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:02,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:03,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:27:03,039 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:27:03,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:03,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1568026990, now seen corresponding path program 1 times [2021-10-11 02:27:03,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:03,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511227750] [2021-10-11 02:27:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/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 02:27:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:03,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:27:03,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:03,157 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:27:03,157 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 02:27:03,161 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:27:03,180 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2021-10-11 02:27:03,188 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:27:03,192 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 02:27:03,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2021-10-11 02:27:03,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:27:03,209 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:27:05,645 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 02:27:05,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:05,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511227750] [2021-10-11 02:27:05,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:05,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:27:05,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143494351] [2021-10-11 02:27:05,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:27:05,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:05,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:27:05,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2021-10-11 02:27:05,646 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 11 states. [2021-10-11 02:27:08,207 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2021-10-11 02:27:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:08,241 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-11 02:27:08,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:27:08,242 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2021-10-11 02:27:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:08,243 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:27:08,243 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:08,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=73, Invalid=166, Unknown=1, NotChecked=0, Total=240 [2021-10-11 02:27:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:08,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-11 02:27:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:08,244 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:08,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:27:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:08,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:08,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:27:08,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:08 BoogieIcfgContainer [2021-10-11 02:27:08,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:08,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:08,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:08,449 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:08,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:58" (3/4) ... [2021-10-11 02:27:08,452 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:08,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:27:08,463 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:27:08,463 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:08,511 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082e662c-489c-4147-bfa1-c9646fadb4e1/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:08,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:08,512 INFO L168 Benchmark]: Toolchain (without parser) took 11058.36 ms. Allocated memory was 56.6 MB in the beginning and 107.0 MB in the end (delta: 50.3 MB). Free memory was 33.7 MB in the beginning and 60.9 MB in the end (delta: -27.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:08,513 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:08,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 948.04 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 33.6 MB in the beginning and 52.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:08,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 81.8 MB. Free memory was 52.4 MB in the beginning and 50.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:08,515 INFO L168 Benchmark]: Boogie Preprocessor took 26.25 ms. Allocated memory is still 81.8 MB. Free memory was 50.3 MB in the beginning and 48.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:08,515 INFO L168 Benchmark]: RCFGBuilder took 440.02 ms. Allocated memory is still 81.8 MB. Free memory was 48.9 MB in the beginning and 56.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:08,516 INFO L168 Benchmark]: TraceAbstraction took 9508.67 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 56.0 MB in the beginning and 63.8 MB in the end (delta: -7.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:08,517 INFO L168 Benchmark]: Witness Printer took 62.76 ms. Allocated memory is still 107.0 MB. Free memory was 63.8 MB in the beginning and 60.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:08,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.4 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 948.04 ms. Allocated memory was 56.6 MB in the beginning and 81.8 MB in the end (delta: 25.2 MB). Free memory was 33.6 MB in the beginning and 52.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.27 ms. Allocated memory is still 81.8 MB. Free memory was 52.4 MB in the beginning and 50.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.25 ms. Allocated memory is still 81.8 MB. Free memory was 50.3 MB in the beginning and 48.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 440.02 ms. Allocated memory is still 81.8 MB. Free memory was 48.9 MB in the beginning and 56.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9508.67 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 56.0 MB in the beginning and 63.8 MB in the end (delta: -7.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Witness Printer took 62.76 ms. Allocated memory is still 107.0 MB. Free memory was 63.8 MB in the beginning and 60.9 MB in the end (delta: 3.0 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: 789]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: 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, 19 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 261 SDslu, 234 SDs, 0 SdLazy, 228 SolverSat, 7 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, 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, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 12 QuantifiedInterpolants, 4736 SizeOfPredicates, 46 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 68 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...