./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.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_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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_f03badcc-bd0a-423a-ad8b-5500d0675414/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 2d51915f2a44f0762761fec81bdd888a975b61fb ............................................................................................................................................. 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_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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_f03badcc-bd0a-423a-ad8b-5500d0675414/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 2d51915f2a44f0762761fec81bdd888a975b61fb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:31:55,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:31:55,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:31:55,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:31:55,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:31:55,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:31:55,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:31:55,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:31:55,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:31:55,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:31:55,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:31:55,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:31:55,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:31:55,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:31:55,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:31:55,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:31:55,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:31:55,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:31:55,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:31:55,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:31:55,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:31:55,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:31:56,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:31:56,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:31:56,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:31:56,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:31:56,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:31:56,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:31:56,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:31:56,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:31:56,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:31:56,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:31:56,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:31:56,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:31:56,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:31:56,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:31:56,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:31:56,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:31:56,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:31:56,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:31:56,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:31:56,022 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-11 02:31:56,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:31:56,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:31:56,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:31:56,049 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:31:56,049 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:31:56,049 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:31:56,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:31:56,050 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:31:56,050 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:31:56,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:31:56,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:31:56,051 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:31:56,052 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:31:56,052 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:31:56,052 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:31:56,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:31:56,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:31:56,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:31:56,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:31:56,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:31:56,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:31:56,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:31:56,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:31:56,056 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:31:56,056 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:31:56,057 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:31:56,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:31:56,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:31:56,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:31:56,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:31:56,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:31:56,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:31:56,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:31:56,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:31:56,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:31:56,060 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:31:56,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:31:56,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:31:56,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:31:56,061 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_f03badcc-bd0a-423a-ad8b-5500d0675414/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d51915f2a44f0762761fec81bdd888a975b61fb [2021-10-11 02:31:56,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:31:56,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:31:56,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:31:56,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:31:56,367 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:31:56,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-10-11 02:31:56,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/d63cbb363/74e4534d90a84892b48ba9b77d016fba/FLAG5b00502d1 [2021-10-11 02:31:57,187 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:31:57,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-10-11 02:31:57,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/d63cbb363/74e4534d90a84892b48ba9b77d016fba/FLAG5b00502d1 [2021-10-11 02:31:57,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/d63cbb363/74e4534d90a84892b48ba9b77d016fba [2021-10-11 02:31:57,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:31:57,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:31:57,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:57,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:31:57,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:31:57,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b07dcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:57, skipping insertion in model container [2021-10-11 02:31:57,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:31:57" (1/1) ... [2021-10-11 02:31:57,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:31:57,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:31:58,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:31:58,077 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 02:31:58,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@fb852cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:31:58, skipping insertion in model container [2021-10-11 02:31:58,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:31:58,080 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:31:58,084 INFO L168 Benchmark]: Toolchain (without parser) took 649.94 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 68.1 MB in the beginning and 100.7 MB in the end (delta: -32.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:58,087 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:58,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.39 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 67.8 MB in the beginning and 100.7 MB in the end (delta: -32.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:58,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 100.7 MB. Free memory was 55.8 MB in the beginning and 55.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 646.39 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 67.8 MB in the beginning and 100.7 MB in the end (delta: -32.8 MB). Peak memory consumption was 8.4 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 02:32:00,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:00,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:00,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:00,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:00,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:00,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:00,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:00,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:00,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:00,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:00,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:00,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:00,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:00,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:00,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:00,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:00,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:00,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:00,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:00,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:00,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:00,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:00,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:00,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:00,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:00,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:00,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:00,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:00,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:00,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:00,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:00,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:00,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:00,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:00,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:00,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:00,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:00,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:00,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:00,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:00,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-11 02:32:00,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:00,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:00,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:00,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:00,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:00,826 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:00,826 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:00,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:00,827 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:00,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 02:32:00,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 02:32:00,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:00,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:00,830 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:32:00,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:00,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:00,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:00,831 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 02:32:00,832 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 02:32:00,832 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 02:32:00,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:00,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:00,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:32:00,833 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:32:00,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:00,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:00,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:00,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:32:00,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:00,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:00,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:00,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:00,835 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:32:00,836 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:32:00,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:00,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:00,836 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_f03badcc-bd0a-423a-ad8b-5500d0675414/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d51915f2a44f0762761fec81bdd888a975b61fb [2021-10-11 02:32:01,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:01,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:01,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:01,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:01,297 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:01,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-10-11 02:32:01,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/24a8b0299/7133bcb60ad249ccac2965b4c0d70d55/FLAG231ce48a8 [2021-10-11 02:32:02,056 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:02,057 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/sv-benchmarks/c/ldv-memsafety/memleaks_test7-2.i [2021-10-11 02:32:02,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/24a8b0299/7133bcb60ad249ccac2965b4c0d70d55/FLAG231ce48a8 [2021-10-11 02:32:02,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/data/24a8b0299/7133bcb60ad249ccac2965b4c0d70d55 [2021-10-11 02:32:02,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:02,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:02,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:02,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:02,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:02,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:02" (1/1) ... [2021-10-11 02:32:02,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686ddd0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:02, skipping insertion in model container [2021-10-11 02:32:02,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:02" (1/1) ... [2021-10-11 02:32:02,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:02,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:02,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:02,968 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:32:02,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:03,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:03,054 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:03,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:03,302 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:03,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03 WrapperNode [2021-10-11 02:32:03,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:03,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:03,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:03,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:03,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:03,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:03,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:03,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:03,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... [2021-10-11 02:32:03,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:03,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:03,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:03,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:03,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:32:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:32:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:32:03,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:32:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-11 02:32:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:03,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:04,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:04,012 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:32:04,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:04 BoogieIcfgContainer [2021-10-11 02:32:04,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:04,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:04,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:04,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:04,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:02" (1/3) ... [2021-10-11 02:32:04,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241b484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:04, skipping insertion in model container [2021-10-11 02:32:04,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:03" (2/3) ... [2021-10-11 02:32:04,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241b484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:04, skipping insertion in model container [2021-10-11 02:32:04,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:04" (3/3) ... [2021-10-11 02:32:04,037 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test7-2.i [2021-10-11 02:32:04,064 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:04,067 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-10-11 02:32:04,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-11 02:32:04,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:04,126 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 02:32:04,126 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:04,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:04,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:04,127 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:04,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:04,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:04,145 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-10-11 02:32:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:04,153 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:04,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:04,155 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:04,161 INFO L82 PathProgramCache]: Analyzing trace with hash 119408646, now seen corresponding path program 1 times [2021-10-11 02:32:04,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:04,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641728516] [2021-10-11 02:32:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:04,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:04,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:04,432 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 02:32:04,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:04,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641728516] [2021-10-11 02:32:04,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:04,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:04,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748440168] [2021-10-11 02:32:04,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:04,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:04,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:04,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:04,464 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2021-10-11 02:32:04,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:04,589 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2021-10-11 02:32:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:04,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:32:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:04,601 INFO L225 Difference]: With dead ends: 67 [2021-10-11 02:32:04,601 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:32:04,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:32:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2021-10-11 02:32:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-11 02:32:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-11 02:32:04,647 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-10-11 02:32:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:04,648 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-11 02:32:04,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-11 02:32:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:04,649 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:04,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:04,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:32:04,866 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:04,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:04,866 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2021-10-11 02:32:04,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:04,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609108407] [2021-10-11 02:32:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:04,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:04,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:04,963 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 02:32:04,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:04,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609108407] [2021-10-11 02:32:04,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:04,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:04,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27904062] [2021-10-11 02:32:04,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:04,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:04,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:04,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:04,967 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2021-10-11 02:32:04,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:04,996 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-10-11 02:32:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:04,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:32:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:04,998 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:32:04,998 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:32:04,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:32:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 02:32:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:32:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-10-11 02:32:05,006 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 8 [2021-10-11 02:32:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:05,006 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-10-11 02:32:05,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-10-11 02:32:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:32:05,007 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:05,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:05,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:32:05,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:05,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:05,221 INFO L82 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2021-10-11 02:32:05,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:05,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906446922] [2021-10-11 02:32:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:05,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:05,328 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 02:32:05,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:05,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906446922] [2021-10-11 02:32:05,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:05,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:05,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051098042] [2021-10-11 02:32:05,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:05,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:05,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:05,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:05,332 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2021-10-11 02:32:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:05,390 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-10-11 02:32:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:05,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-10-11 02:32:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:05,392 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:32:05,392 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:32:05,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 02:32:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:32:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-10-11 02:32:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:32:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-11 02:32:05,397 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-10-11 02:32:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:05,397 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-11 02:32:05,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-11 02:32:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:32:05,398 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:05,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:05,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:32:05,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:05,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:05,620 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2021-10-11 02:32:05,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:05,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426217620] [2021-10-11 02:32:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:05,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:05,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:05,800 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 02:32:05,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:05,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426217620] [2021-10-11 02:32:05,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:05,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:05,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690145837] [2021-10-11 02:32:05,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:05,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:05,805 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2021-10-11 02:32:05,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:05,938 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-10-11 02:32:05,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:05,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:32:05,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:05,940 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:32:05,940 INFO L226 Difference]: Without dead ends: 62 [2021-10-11 02:32:05,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-11 02:32:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2021-10-11 02:32:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 02:32:05,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-10-11 02:32:05,953 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 9 [2021-10-11 02:32:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:05,953 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-10-11 02:32:05,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-10-11 02:32:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:32:05,954 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:05,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:06,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:32:06,168 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:06,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1181720057, now seen corresponding path program 1 times [2021-10-11 02:32:06,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:06,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788468506] [2021-10-11 02:32:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:06,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:06,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:06,314 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:06,315 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 02:32:06,321 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:06,344 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2021-10-11 02:32:06,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:06,354 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 02:32:06,354 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2021-10-11 02:32:06,357 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:06,408 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:06,554 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 02:32:06,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:06,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788468506] [2021-10-11 02:32:06,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:06,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:06,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063972590] [2021-10-11 02:32:06,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:06,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:06,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:06,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:06,556 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 5 states. [2021-10-11 02:32:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:06,812 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2021-10-11 02:32:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:06,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:32:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:06,815 INFO L225 Difference]: With dead ends: 67 [2021-10-11 02:32:06,815 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:32:06,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:32:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2021-10-11 02:32:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-10-11 02:32:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-10-11 02:32:06,821 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 9 [2021-10-11 02:32:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:06,821 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-10-11 02:32:06,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-10-11 02:32:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:32:06,822 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:06,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:07,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:32:07,032 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:07,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1182786029, now seen corresponding path program 1 times [2021-10-11 02:32:07,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:07,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459802220] [2021-10-11 02:32:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:07,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:32:07,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:07,134 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 02:32:07,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:07,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459802220] [2021-10-11 02:32:07,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:07,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:07,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826378724] [2021-10-11 02:32:07,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:07,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:07,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:07,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:07,137 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2021-10-11 02:32:07,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:07,177 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-10-11 02:32:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:07,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:32:07,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:07,179 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:32:07,179 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:32:07,180 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 02:32:07,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:32:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-11 02:32:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:32:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-11 02:32:07,183 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-10-11 02:32:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:07,184 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-11 02:32:07,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-11 02:32:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:07,184 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:07,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:07,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:32:07,400 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:07,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2021-10-11 02:32:07,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:07,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535526558] [2021-10-11 02:32:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:07,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:07,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:07,476 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 02:32:07,477 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:07,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:07,480 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:07,480 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:32:07,495 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 02:32:07,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:07,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535526558] [2021-10-11 02:32:07,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:07,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:07,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521287314] [2021-10-11 02:32:07,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:07,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:07,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:07,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:07,499 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2021-10-11 02:32:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:07,585 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-10-11 02:32:07,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:07,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:32:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:07,587 INFO L225 Difference]: With dead ends: 42 [2021-10-11 02:32:07,587 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 02:32:07,587 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 02:32:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 02:32:07,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2021-10-11 02:32:07,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 02:32:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-11 02:32:07,591 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 10 [2021-10-11 02:32:07,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:07,591 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-11 02:32:07,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:07,592 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-10-11 02:32:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:07,592 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:07,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:07,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:32:07,805 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:07,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:07,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2021-10-11 02:32:07,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:07,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099648071] [2021-10-11 02:32:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/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 02:32:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:07,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:07,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:07,895 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 02:32:07,896 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:07,899 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:07,900 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:07,900 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-10-11 02:32:07,948 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:07,948 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2021-10-11 02:32:07,954 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:07,964 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:07,972 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 02:32:07,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2021-10-11 02:32:08,105 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 02:32:08,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:08,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099648071] [2021-10-11 02:32:08,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:08,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:08,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669239852] [2021-10-11 02:32:08,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:08,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:08,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:08,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:08,108 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 4 states. [2021-10-11 02:32:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:08,186 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-10-11 02:32:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:08,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:32:08,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:08,190 INFO L225 Difference]: With dead ends: 41 [2021-10-11 02:32:08,190 INFO L226 Difference]: Without dead ends: 41 [2021-10-11 02:32:08,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-11 02:32:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2021-10-11 02:32:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:32:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-11 02:32:08,194 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 10 [2021-10-11 02:32:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:08,195 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-11 02:32:08,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:08,195 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-11 02:32:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:08,195 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:08,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:08,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:32:08,408 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:08,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2021-10-11 02:32:08,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:08,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139483225] [2021-10-11 02:32:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:08,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-11 02:32:08,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:08,478 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 02:32:08,479 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:08,487 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:08,491 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 02:32:08,491 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:08,499 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:08,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:08,500 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:16 [2021-10-11 02:32:08,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-11 02:32:08,533 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-10-11 02:32:08,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:08,553 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:08,566 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:08,566 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-10-11 02:32:08,569 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:08,580 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:08,585 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:08,586 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:9 [2021-10-11 02:32:08,629 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 02:32:08,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:08,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139483225] [2021-10-11 02:32:08,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:08,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:08,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084983510] [2021-10-11 02:32:08,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:08,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:08,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:08,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:08,633 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2021-10-11 02:32:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:08,710 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-11 02:32:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:08,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:32:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:08,711 INFO L225 Difference]: With dead ends: 40 [2021-10-11 02:32:08,711 INFO L226 Difference]: Without dead ends: 40 [2021-10-11 02:32:08,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-11 02:32:08,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2021-10-11 02:32:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:32:08,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-11 02:32:08,715 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 10 [2021-10-11 02:32:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:08,715 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-11 02:32:08,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:08,715 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-11 02:32:08,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:32:08,716 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:08,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:08,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:32:08,925 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:08,925 INFO L82 PathProgramCache]: Analyzing trace with hash 889859920, now seen corresponding path program 1 times [2021-10-11 02:32:08,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:08,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684729327] [2021-10-11 02:32:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:08,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:32:08,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:09,027 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 02:32:09,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:09,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684729327] [2021-10-11 02:32:09,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:09,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:32:09,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971955799] [2021-10-11 02:32:09,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:09,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:09,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:09,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:09,035 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2021-10-11 02:32:09,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:09,090 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-11 02:32:09,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:09,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 02:32:09,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:09,091 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:32:09,091 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:32:09,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 02:32:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:32:09,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-10-11 02:32:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 02:32:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-11 02:32:09,095 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 13 [2021-10-11 02:32:09,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:09,095 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-11 02:32:09,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-10-11 02:32:09,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:32:09,096 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:09,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:09,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:32:09,320 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:09,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1815865709, now seen corresponding path program 1 times [2021-10-11 02:32:09,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:09,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410517321] [2021-10-11 02:32:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:09,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:32:09,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:09,411 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:09,411 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 02:32:09,413 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:09,429 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2021-10-11 02:32:09,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:09,432 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 02:32:09,432 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2021-10-11 02:32:09,433 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:09,447 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:11,827 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 02:32:11,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:11,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410517321] [2021-10-11 02:32:11,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:11,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:32:11,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391037130] [2021-10-11 02:32:11,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:32:11,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:32:11,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2021-10-11 02:32:11,832 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2021-10-11 02:32:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:14,293 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-10-11 02:32:14,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:32:14,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-10-11 02:32:14,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:14,294 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:32:14,294 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:32:14,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=24, Invalid=47, Unknown=1, NotChecked=0, Total=72 [2021-10-11 02:32:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:32:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-10-11 02:32:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:32:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-11 02:32:14,298 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14 [2021-10-11 02:32:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:14,298 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-11 02:32:14,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:32:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-11 02:32:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:32:14,299 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:14,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:14,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:32:14,500 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:14,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:14,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1320771049, now seen corresponding path program 1 times [2021-10-11 02:32:14,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:14,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856713934] [2021-10-11 02:32:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:14,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:32:14,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:14,607 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 02:32:14,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:14,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856713934] [2021-10-11 02:32:14,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:14,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:14,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991902573] [2021-10-11 02:32:14,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:14,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:14,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:14,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:14,612 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 5 states. [2021-10-11 02:32:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:14,691 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-11 02:32:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:32:14,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:32:14,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:14,692 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:32:14,692 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:32:14,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 02:32:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:32:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-10-11 02:32:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-10-11 02:32:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-11 02:32:14,695 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2021-10-11 02:32:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:14,695 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-11 02:32:14,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-11 02:32:14,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:32:14,696 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:14,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:14,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:32:14,897 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1320771048, now seen corresponding path program 1 times [2021-10-11 02:32:14,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:14,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037993557] [2021-10-11 02:32:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:14,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-11 02:32:14,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:15,041 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 02:32:15,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:15,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037993557] [2021-10-11 02:32:15,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:15,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:15,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148156300] [2021-10-11 02:32:15,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:32:15,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:15,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:32:15,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:32:15,043 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2021-10-11 02:32:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:15,152 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-11 02:32:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:32:15,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:32:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:15,153 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:32:15,153 INFO L226 Difference]: Without dead ends: 26 [2021-10-11 02:32:15,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 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 02:32:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-11 02:32:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-10-11 02:32:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:32:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-11 02:32:15,156 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2021-10-11 02:32:15,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:15,157 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-11 02:32:15,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:32:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-11 02:32:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:32:15,157 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:15,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:15,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:32:15,366 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:15,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:15,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2005782406, now seen corresponding path program 1 times [2021-10-11 02:32:15,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:15,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402592318] [2021-10-11 02:32:15,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:15,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:15,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:15,437 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 02:32:15,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:15,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402592318] [2021-10-11 02:32:15,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:15,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:32:15,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831226683] [2021-10-11 02:32:15,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:15,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:15,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:15,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:15,439 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 4 states. [2021-10-11 02:32:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:15,454 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-11 02:32:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:32:15,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-10-11 02:32:15,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:15,455 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:32:15,455 INFO L226 Difference]: Without dead ends: 23 [2021-10-11 02:32:15,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 02:32:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-11 02:32:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-11 02:32:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-10-11 02:32:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-11 02:32:15,458 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 15 [2021-10-11 02:32:15,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:15,458 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-11 02:32:15,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:15,458 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-11 02:32:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:32:15,458 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:15,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:15,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2021-10-11 02:32:15,673 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:15,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:15,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2005770458, now seen corresponding path program 1 times [2021-10-11 02:32:15,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:15,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893844342] [2021-10-11 02:32:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:15,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:32:15,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:15,816 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 02:32:15,817 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:15,820 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:15,820 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:15,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2021-10-11 02:32:15,879 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-11 02:32:15,880 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:15,883 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:15,883 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:15,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2021-10-11 02:32:15,898 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 02:32:15,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:15,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893844342] [2021-10-11 02:32:15,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:15,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:32:15,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985760497] [2021-10-11 02:32:15,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:32:15,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:15,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:32:15,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:15,900 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 8 states. [2021-10-11 02:32:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:16,063 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-11 02:32:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:32:16,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2021-10-11 02:32:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:16,064 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:32:16,064 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 02:32:16,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:32:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 02:32:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-11 02:32:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-10-11 02:32:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-11 02:32:16,066 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 15 [2021-10-11 02:32:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:16,067 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-11 02:32:16,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:32:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-11 02:32:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:32:16,067 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:16,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:16,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2021-10-11 02:32:16,275 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:16,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2049342135, now seen corresponding path program 1 times [2021-10-11 02:32:16,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:16,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145521098] [2021-10-11 02:32:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:16,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 02:32:16,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:16,498 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 02:32:16,499 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:16,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:16,513 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:16,513 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:16 [2021-10-11 02:32:16,574 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-11 02:32:16,575 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:16,581 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:16,581 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:16,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:8 [2021-10-11 02:32:16,602 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 02:32:16,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:16,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145521098] [2021-10-11 02:32:16,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:16,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:32:16,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312060558] [2021-10-11 02:32:16,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:32:16,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:16,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:32:16,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:32:16,603 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 9 states. [2021-10-11 02:32:16,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:16,949 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-11 02:32:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:32:16,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2021-10-11 02:32:16,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:16,950 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:32:16,950 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:32:16,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:32:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:32:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-11 02:32:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:32:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-11 02:32:16,953 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 16 [2021-10-11 02:32:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:16,953 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-11 02:32:16,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:32:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-11 02:32:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:32:16,954 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:16,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:17,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2021-10-11 02:32:17,154 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:17,155 INFO L82 PathProgramCache]: Analyzing trace with hash -894903172, now seen corresponding path program 1 times [2021-10-11 02:32:17,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:17,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756006834] [2021-10-11 02:32:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:17,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:32:17,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:17,254 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 02:32:17,255 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,265 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:17,266 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,266 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2021-10-11 02:32:17,332 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 02:32:17,336 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,346 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:17,347 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,347 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2021-10-11 02:32:17,389 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-10-11 02:32:17,390 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,392 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:17,393 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,393 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2021-10-11 02:32:17,410 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 02:32:17,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:17,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756006834] [2021-10-11 02:32:17,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:17,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 02:32:17,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324016148] [2021-10-11 02:32:17,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:32:17,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:17,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:32:17,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:17,412 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 8 states. [2021-10-11 02:32:17,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:17,613 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-11 02:32:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:32:17,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-10-11 02:32:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:17,614 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:32:17,614 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:32:17,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:32:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:32:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-11 02:32:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-10-11 02:32:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-11 02:32:17,617 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2021-10-11 02:32:17,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:17,617 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-11 02:32:17,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:32:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-11 02:32:17,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:32:17,618 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:17,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:17,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2021-10-11 02:32:17,819 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE]=== [2021-10-11 02:32:17,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:17,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1008486272, now seen corresponding path program 1 times [2021-10-11 02:32:17,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:32:17,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127321788] [2021-10-11 02:32:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2021-10-11 02:32:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:17,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:32:17,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:17,914 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:17,914 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 02:32:17,922 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:17,942 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2021-10-11 02:32:17,944 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:17,945 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 02:32:17,945 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2021-10-11 02:32:17,946 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:17,964 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-10-11 02:32:18,084 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2021-10-11 02:32:18,261 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-11 02:32:18,262 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:18,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:18,293 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:32:18,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:41, output treesize:36 [2021-10-11 02:32:18,417 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-10-11 02:32:18,420 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-11 02:32:18,444 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-11 02:32:18,446 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-10-11 02:32:18,446 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:43, output treesize:30 [2021-10-11 02:32:20,682 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 02:32:20,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:32:20,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127321788] [2021-10-11 02:32:20,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:20,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-11 02:32:20,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330269843] [2021-10-11 02:32:20,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:32:20,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:32:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:32:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2021-10-11 02:32:20,684 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 11 states. [2021-10-11 02:32:23,263 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-10-11 02:32:23,582 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-10-11 02:32:25,718 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-10-11 02:32:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:25,764 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-11 02:32:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:32:25,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2021-10-11 02:32:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:25,765 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:32:25,765 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:25,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=64, Invalid=175, Unknown=1, NotChecked=0, Total=240 [2021-10-11 02:32:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:25,767 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-11 02:32:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:25,767 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:25,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:32:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:25,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:25,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2021-10-11 02:32:25,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:25 BoogieIcfgContainer [2021-10-11 02:32:25,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:25,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:25,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:25,972 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:25,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:04" (3/4) ... [2021-10-11 02:32:25,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:25,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:32:25,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:32:25,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:32:26,043 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03badcc-bd0a-423a-ad8b-5500d0675414/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:26,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:26,044 INFO L168 Benchmark]: Toolchain (without parser) took 23724.52 ms. Allocated memory was 54.5 MB in the beginning and 104.9 MB in the end (delta: 50.3 MB). Free memory was 29.3 MB in the beginning and 70.9 MB in the end (delta: -41.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,045 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 34.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:26,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 982.31 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 29.1 MB in the beginning and 37.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.79 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 34.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,046 INFO L168 Benchmark]: Boogie Preprocessor took 76.57 ms. Allocated memory is still 71.3 MB. Free memory was 34.8 MB in the beginning and 51.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,047 INFO L168 Benchmark]: RCFGBuilder took 544.33 ms. Allocated memory is still 71.3 MB. Free memory was 51.5 MB in the beginning and 51.7 MB in the end (delta: -213.1 kB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,047 INFO L168 Benchmark]: TraceAbstraction took 21941.53 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 51.3 MB in the beginning and 74.0 MB in the end (delta: -22.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,048 INFO L168 Benchmark]: Witness Printer took 71.58 ms. Allocated memory is still 104.9 MB. Free memory was 74.0 MB in the beginning and 70.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:26,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory was 34.8 MB in the beginning and 34.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 982.31 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 29.1 MB in the beginning and 37.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.79 ms. Allocated memory is still 71.3 MB. Free memory was 37.1 MB in the beginning and 34.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.57 ms. Allocated memory is still 71.3 MB. Free memory was 34.8 MB in the beginning and 51.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 544.33 ms. Allocated memory is still 71.3 MB. Free memory was 51.5 MB in the beginning and 51.7 MB in the end (delta: -213.1 kB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21941.53 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 51.3 MB in the beginning and 74.0 MB in the end (delta: -22.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * Witness Printer took 71.58 ms. Allocated memory is still 104.9 MB. Free memory was 74.0 MB in the beginning and 70.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 781]: pointer dereference always succeeds For all program executions holds that pointer dereference 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: 790]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 774]: pointer dereference always succeeds For all program executions holds that pointer dereference 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]: pointer dereference always succeeds For all program executions holds that pointer dereference 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: 777]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 777]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.8s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 464 SDtfs, 783 SDslu, 631 SDs, 0 SdLazy, 537 SolverSat, 38 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, 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, 18 MinimizatonAttempts, 116 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 200 ConstructedInterpolants, 46 QuantifiedInterpolants, 30358 SizeOfPredicates, 98 NumberOfNonLiveVariables, 977 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...