./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.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-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan --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 6e3c5ff68acf947cb006ebbabdce00a2ebd40498 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan --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 6e3c5ff68acf947cb006ebbabdce00a2ebd40498 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:29:25,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:29:25,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:29:25,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:29:25,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:29:25,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:29:25,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:29:25,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:29:25,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:29:25,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:29:25,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:29:25,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:29:25,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:29:25,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:29:25,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:29:25,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:29:25,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:29:25,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:29:25,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:29:25,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:29:26,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:29:26,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:29:26,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:29:26,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:29:26,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:29:26,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:29:26,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:29:26,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:29:26,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:29:26,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:29:26,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:29:26,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:29:26,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:29:26,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:29:26,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:29:26,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:29:26,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:29:26,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:29:26,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:29:26,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:29:26,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:29:26,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 14:29:26,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:29:26,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:29:26,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:29:26,030 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:29:26,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:29:26,030 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:29:26,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:29:26,030 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:29:26,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:29:26,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:29:26,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:29:26,031 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:29:26,031 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:29:26,031 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:29:26,031 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:29:26,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:29:26,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:29:26,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:29:26,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:29:26,032 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:29:26,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:29:26,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:29:26,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:29:26,032 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:29:26,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:29:26,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:29:26,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:29:26,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:29:26,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:29:26,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:29:26,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:29:26,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:29:26,034 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-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3c5ff68acf947cb006ebbabdce00a2ebd40498 [2020-12-09 14:29:26,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:29:26,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:29:26,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:29:26,228 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:29:26,228 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:29:26,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2020-12-09 14:29:26,270 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/85ab764c2/93e9ced320874caeb5d80128a6d3648a/FLAGe68ab5d04 [2020-12-09 14:29:26,692 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:29:26,693 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2020-12-09 14:29:26,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/85ab764c2/93e9ced320874caeb5d80128a6d3648a/FLAGe68ab5d04 [2020-12-09 14:29:26,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/85ab764c2/93e9ced320874caeb5d80128a6d3648a [2020-12-09 14:29:26,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:29:26,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:29:26,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:29:26,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:29:26,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:29:26,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:29:26" (1/1) ... [2020-12-09 14:29:26,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4d7759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:26, skipping insertion in model container [2020-12-09 14:29:26,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:29:26" (1/1) ... [2020-12-09 14:29:26,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:29:26,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:29:26,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:29:26,981 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) [2020-12-09 14:29:26,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3dc854df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:26, skipping insertion in model container [2020-12-09 14:29:26,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:29:26,982 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 14:29:26,984 INFO L168 Benchmark]: Toolchain (without parser) took 265.86 ms. Allocated memory is still 123.7 MB. Free memory was 82.8 MB in the beginning and 95.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:26,984 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 123.7 MB. Free memory is still 100.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:29:26,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.06 ms. Allocated memory is still 123.7 MB. Free memory was 82.6 MB in the beginning and 95.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:26,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 123.7 MB. Free memory is still 100.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.06 ms. Allocated memory is still 123.7 MB. Free memory was 82.6 MB in the beginning and 95.7 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.5 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 [2020-12-09 14:29:28,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:29:28,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:29:28,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:29:28,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:29:28,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:29:28,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:29:28,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:29:28,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:29:28,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:29:28,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:29:28,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:29:28,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:29:28,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:29:28,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:29:28,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:29:28,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:29:28,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:29:28,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:29:28,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:29:28,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:29:28,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:29:28,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:29:28,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:29:28,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:29:28,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:29:28,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:29:28,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:29:28,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:29:28,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:29:28,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:29:28,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:29:28,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:29:28,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:29:28,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:29:28,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:29:28,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:29:28,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:29:28,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:29:28,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:29:28,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:29:28,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 14:29:28,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:29:28,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:29:28,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:29:28,343 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:29:28,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:29:28,344 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:29:28,344 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:29:28,344 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:29:28,344 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:29:28,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 14:29:28,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 14:29:28,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:29:28,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:29:28,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 14:29:28,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:29:28,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:29:28,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:29:28,346 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 14:29:28,347 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 14:29:28,347 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 14:29:28,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:29:28,347 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:29:28,347 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 14:29:28,347 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 14:29:28,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:29:28,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:29:28,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:29:28,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 14:29:28,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:29:28,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:29:28,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:29:28,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:29:28,349 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 14:29:28,349 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 14:29:28,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:29:28,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:29:28,350 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-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3c5ff68acf947cb006ebbabdce00a2ebd40498 [2020-12-09 14:29:28,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:29:28,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:29:28,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:29:28,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:29:28,623 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:29:28,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2020-12-09 14:29:28,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/abf524e94/f22ad621aa064b0181006a4a8586813b/FLAG03eef2d9b [2020-12-09 14:29:29,093 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:29:29,094 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/sv-benchmarks/c/ldv-memsafety/memleaks_test6.i [2020-12-09 14:29:29,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/abf524e94/f22ad621aa064b0181006a4a8586813b/FLAG03eef2d9b [2020-12-09 14:29:29,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/data/abf524e94/f22ad621aa064b0181006a4a8586813b [2020-12-09 14:29:29,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:29:29,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:29:29,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:29:29,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:29:29,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:29:29,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7b7245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29, skipping insertion in model container [2020-12-09 14:29:29,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:29:29,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:29:29,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:29:29,445 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 14:29:29,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:29:29,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:29:29,488 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:29:29,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:29:29,601 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:29:29,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29 WrapperNode [2020-12-09 14:29:29,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:29:29,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:29:29,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:29:29,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:29:29,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:29:29,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:29:29,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:29:29,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:29:29,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... [2020-12-09 14:29:29,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:29:29,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:29:29,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:29:29,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:29:29,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 14:29:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 14:29:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:29:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 14:29:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 14:29:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 14:29:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:29:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:29:29,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:29:29,984 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 14:29:29,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:29:29 BoogieIcfgContainer [2020-12-09 14:29:29,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:29:29,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:29:29,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:29:29,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:29:29,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:29:29" (1/3) ... [2020-12-09 14:29:29,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbb6998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:29:29, skipping insertion in model container [2020-12-09 14:29:29,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:29:29" (2/3) ... [2020-12-09 14:29:29,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbb6998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:29:29, skipping insertion in model container [2020-12-09 14:29:29,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:29:29" (3/3) ... [2020-12-09 14:29:29,992 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6.i [2020-12-09 14:29:30,004 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:29:30,008 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-12-09 14:29:30,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-12-09 14:29:30,031 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:29:30,032 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 14:29:30,032 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:29:30,032 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:29:30,032 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:29:30,032 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:29:30,032 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:29:30,032 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:29:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-09 14:29:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:29:30,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:30,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:30,048 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:30,052 INFO L82 PathProgramCache]: Analyzing trace with hash 119409031, now seen corresponding path program 1 times [2020-12-09 14:29:30,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:30,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517336777] [2020-12-09 14:29:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:30,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:29:30,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:30,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:30,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517336777] [2020-12-09 14:29:30,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:30,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:29:30,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795191424] [2020-12-09 14:29:30,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:29:30,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:30,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:29:30,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:29:30,189 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-12-09 14:29:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:30,250 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-12-09 14:29:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:29:30,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 14:29:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:30,258 INFO L225 Difference]: With dead ends: 71 [2020-12-09 14:29:30,258 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 14:29:30,259 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 [2020-12-09 14:29:30,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 14:29:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2020-12-09 14:29:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 14:29:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-09 14:29:30,284 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-09 14:29:30,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:30,284 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-09 14:29:30,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:29:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-09 14:29:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:29:30,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:30,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:30,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 14:29:30,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2020-12-09 14:29:30,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:30,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457241062] [2020-12-09 14:29:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:30,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:29:30,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:30,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:30,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457241062] [2020-12-09 14:29:30,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:30,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:29:30,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872362193] [2020-12-09 14:29:30,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:29:30,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:30,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:29:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:29:30,579 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-09 14:29:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:30,601 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-12-09 14:29:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:29:30,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 14:29:30,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:30,603 INFO L225 Difference]: With dead ends: 36 [2020-12-09 14:29:30,603 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 14:29:30,603 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 [2020-12-09 14:29:30,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 14:29:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-09 14:29:30,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 14:29:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-09 14:29:30,606 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2020-12-09 14:29:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:30,607 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-09 14:29:30,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:29:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-09 14:29:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:29:30,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:30,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:30,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 14:29:30,809 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:30,809 INFO L82 PathProgramCache]: Analyzing trace with hash 176667333, now seen corresponding path program 1 times [2020-12-09 14:29:30,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:30,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999234875] [2020-12-09 14:29:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:30,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:29:30,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:31,012 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 14:29:31,012 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 2 case distinctions, treesize of input 12 treesize of output 33 [2020-12-09 14:29:31,017 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:31,038 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2020-12-09 14:29:31,044 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:31,047 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. [2020-12-09 14:29:31,047 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2020-12-09 14:29:31,050 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:31,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:31,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999234875] [2020-12-09 14:29:31,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:31,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 14:29:31,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167625093] [2020-12-09 14:29:31,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:29:31,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:29:31,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:29:31,068 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2020-12-09 14:29:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:31,110 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-12-09 14:29:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:29:31,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 14:29:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:31,111 INFO L225 Difference]: With dead ends: 49 [2020-12-09 14:29:31,111 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 14:29:31,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:29:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 14:29:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-12-09 14:29:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 14:29:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-12-09 14:29:31,115 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 8 [2020-12-09 14:29:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:31,115 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-12-09 14:29:31,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:29:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-12-09 14:29:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:29:31,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:31,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:31,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 14:29:31,316 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:31,317 INFO L82 PathProgramCache]: Analyzing trace with hash 176667334, now seen corresponding path program 1 times [2020-12-09 14:29:31,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:31,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442612905] [2020-12-09 14:29:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:31,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:29:31,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:31,408 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:31,408 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 [2020-12-09 14:29:31,412 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:31,435 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-09 14:29:31,439 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:31,439 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:11 [2020-12-09 14:29:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:31,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:31,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442612905] [2020-12-09 14:29:31,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:31,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 14:29:31,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387036213] [2020-12-09 14:29:31,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:29:31,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:31,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:29:31,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:29:31,465 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 3 states. [2020-12-09 14:29:31,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:31,527 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-09 14:29:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:29:31,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 14:29:31,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:31,529 INFO L225 Difference]: With dead ends: 70 [2020-12-09 14:29:31,529 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 14:29:31,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:29:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 14:29:31,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2020-12-09 14:29:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 14:29:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2020-12-09 14:29:31,536 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 8 [2020-12-09 14:29:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:31,536 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2020-12-09 14:29:31,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:29:31,537 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2020-12-09 14:29:31,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:29:31,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:31,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:31,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 14:29:31,740 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:31,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:31,741 INFO L82 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2020-12-09 14:29:31,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:31,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700566350] [2020-12-09 14:29:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:31,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:29:31,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:31,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:31,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700566350] [2020-12-09 14:29:31,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:31,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:29:31,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768111012] [2020-12-09 14:29:31,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:29:31,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:31,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:29:31,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:29:31,893 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand 5 states. [2020-12-09 14:29:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:31,926 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2020-12-09 14:29:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:29:31,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 14:29:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:31,927 INFO L225 Difference]: With dead ends: 63 [2020-12-09 14:29:31,928 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 14:29:31,928 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 [2020-12-09 14:29:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 14:29:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2020-12-09 14:29:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 14:29:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-12-09 14:29:31,932 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 8 [2020-12-09 14:29:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:31,932 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-12-09 14:29:31,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:29:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-12-09 14:29:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 14:29:31,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:31,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:32,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 14:29:32,134 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2020-12-09 14:29:32,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:32,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837899409] [2020-12-09 14:29:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:32,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:29:32,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:32,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:32,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837899409] [2020-12-09 14:29:32,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:32,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:29:32,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152840977] [2020-12-09 14:29:32,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:29:32,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:32,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:29:32,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:29:32,264 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 5 states. [2020-12-09 14:29:32,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:32,334 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-09 14:29:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:29:32,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 14:29:32,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:32,335 INFO L225 Difference]: With dead ends: 71 [2020-12-09 14:29:32,335 INFO L226 Difference]: Without dead ends: 71 [2020-12-09 14:29:32,335 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 [2020-12-09 14:29:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-09 14:29:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-12-09 14:29:32,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 14:29:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2020-12-09 14:29:32,339 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 9 [2020-12-09 14:29:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:32,339 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2020-12-09 14:29:32,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:29:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2020-12-09 14:29:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 14:29:32,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:32,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:32,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 14:29:32,542 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:32,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:32,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1181720059, now seen corresponding path program 1 times [2020-12-09 14:29:32,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:32,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091540208] [2020-12-09 14:29:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:32,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 14:29:32,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:32,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:32,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091540208] [2020-12-09 14:29:32,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:32,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:29:32,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538340000] [2020-12-09 14:29:32,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 14:29:32,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:32,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 14:29:32,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:29:32,665 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand 3 states. [2020-12-09 14:29:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:32,705 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2020-12-09 14:29:32,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 14:29:32,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 14:29:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:32,706 INFO L225 Difference]: With dead ends: 73 [2020-12-09 14:29:32,706 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 14:29:32,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 14:29:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 14:29:32,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2020-12-09 14:29:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-09 14:29:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-12-09 14:29:32,709 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 9 [2020-12-09 14:29:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:32,710 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-12-09 14:29:32,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 14:29:32,710 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2020-12-09 14:29:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 14:29:32,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:32,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:32,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 14:29:32,912 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:32,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1182786029, now seen corresponding path program 1 times [2020-12-09 14:29:32,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:32,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119144593] [2020-12-09 14:29:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:33,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 14:29:33,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:33,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:33,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119144593] [2020-12-09 14:29:33,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:33,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:29:33,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983228206] [2020-12-09 14:29:33,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:29:33,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:33,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:29:33,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:29:33,073 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 4 states. [2020-12-09 14:29:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:33,094 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-12-09 14:29:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:29:33,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 14:29:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:33,095 INFO L225 Difference]: With dead ends: 38 [2020-12-09 14:29:33,095 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 14:29:33,095 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 [2020-12-09 14:29:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 14:29:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-09 14:29:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 14:29:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-09 14:29:33,097 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 9 [2020-12-09 14:29:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:33,097 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-09 14:29:33,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:29:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-09 14:29:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 14:29:33,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:33,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:33,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 14:29:33,299 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:33,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2020-12-09 14:29:33,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:33,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596067220] [2020-12-09 14:29:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:33,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:29:33,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:33,373 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 [2020-12-09 14:29:33,373 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:33,375 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:33,375 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:33,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 14:29:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:33,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:33,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596067220] [2020-12-09 14:29:33,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:33,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:29:33,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46680471] [2020-12-09 14:29:33,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:29:33,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:33,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:29:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:29:33,387 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2020-12-09 14:29:33,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:33,440 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-12-09 14:29:33,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:29:33,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 14:29:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:33,441 INFO L225 Difference]: With dead ends: 47 [2020-12-09 14:29:33,441 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 14:29:33,441 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 [2020-12-09 14:29:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 14:29:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-12-09 14:29:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 14:29:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-09 14:29:33,443 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-09 14:29:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:33,444 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-09 14:29:33,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:29:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-09 14:29:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 14:29:33,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:33,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:33,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 14:29:33,646 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:33,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2020-12-09 14:29:33,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:33,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107109586] [2020-12-09 14:29:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:33,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:29:33,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:33,776 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 14:29:33,776 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 2 case distinctions, treesize of input 12 treesize of output 33 [2020-12-09 14:29:33,778 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:33,798 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2020-12-09 14:29:33,799 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:33,800 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. [2020-12-09 14:29:33,800 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2020-12-09 14:29:33,801 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:33,840 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:33,840 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 19 treesize of output 41 [2020-12-09 14:29:33,843 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:33,852 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:33,856 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. [2020-12-09 14:29:33,856 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:15 [2020-12-09 14:29:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:33,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:33,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107109586] [2020-12-09 14:29:33,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:33,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:29:33,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460587277] [2020-12-09 14:29:33,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:29:33,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:33,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:29:33,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:29:33,906 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-12-09 14:29:33,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:33,974 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-09 14:29:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:29:33,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 14:29:33,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:33,975 INFO L225 Difference]: With dead ends: 46 [2020-12-09 14:29:33,975 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 14:29:33,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:29:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 14:29:33,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2020-12-09 14:29:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 14:29:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-09 14:29:33,978 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 10 [2020-12-09 14:29:33,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:33,978 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-09 14:29:33,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:29:33,978 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-09 14:29:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 14:29:33,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:33,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:34,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 14:29:34,181 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:34,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2020-12-09 14:29:34,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:34,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932843133] [2020-12-09 14:29:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:34,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 14:29:34,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:34,297 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:34,297 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 [2020-12-09 14:29:34,299 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,319 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.0 percent of original size [2020-12-09 14:29:34,356 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 14:29:34,356 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 2 case distinctions, treesize of input 12 treesize of output 33 [2020-12-09 14:29:34,358 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,393 INFO L625 ElimStorePlain]: treesize reduction 12, result has 77.8 percent of original size [2020-12-09 14:29:34,395 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:34,396 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:34,397 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:29:34,397 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:44 [2020-12-09 14:29:34,398 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:34,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:34,421 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 14:29:34,422 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:34,528 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:34,530 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:34,531 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:34,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:29:34,577 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:34,577 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 44 [2020-12-09 14:29:34,579 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:29:34,586 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 12 treesize of output 14 [2020-12-09 14:29:34,588 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:29:34,597 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 12 treesize of output 14 [2020-12-09 14:29:34,598 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,685 INFO L625 ElimStorePlain]: treesize reduction 18, result has 83.6 percent of original size [2020-12-09 14:29:34,693 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:34,693 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 [2020-12-09 14:29:34,694 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,703 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:34,703 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 13 treesize of output 17 [2020-12-09 14:29:34,704 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,721 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:34,721 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2020-12-09 14:29:34,723 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,767 INFO L625 ElimStorePlain]: treesize reduction 51, result has 26.1 percent of original size [2020-12-09 14:29:34,768 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:34,769 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:93, output treesize:9 [2020-12-09 14:29:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:34,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:34,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932843133] [2020-12-09 14:29:34,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:34,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:29:34,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049767558] [2020-12-09 14:29:34,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:29:34,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:34,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:29:34,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:29:34,786 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-12-09 14:29:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:34,921 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-12-09 14:29:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:29:34,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 14:29:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:34,922 INFO L225 Difference]: With dead ends: 44 [2020-12-09 14:29:34,922 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 14:29:34,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:29:34,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 14:29:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2020-12-09 14:29:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 14:29:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-09 14:29:34,924 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 10 [2020-12-09 14:29:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:34,924 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-09 14:29:34,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:29:34,924 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-09 14:29:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 14:29:34,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:34,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:35,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 14:29:35,126 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:35,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:35,127 INFO L82 PathProgramCache]: Analyzing trace with hash 889860305, now seen corresponding path program 1 times [2020-12-09 14:29:35,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:35,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903039513] [2020-12-09 14:29:35,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:35,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:29:35,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:35,260 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 14:29:35,260 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 2 case distinctions, treesize of input 12 treesize of output 33 [2020-12-09 14:29:35,261 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:35,278 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2020-12-09 14:29:35,279 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:35,280 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. [2020-12-09 14:29:35,280 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2020-12-09 14:29:35,281 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:35,304 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:35,304 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 19 treesize of output 41 [2020-12-09 14:29:35,306 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:35,311 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:35,312 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:35,312 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:19 [2020-12-09 14:29:35,344 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2020-12-09 14:29:35,345 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:35,355 INFO L625 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2020-12-09 14:29:35,356 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. [2020-12-09 14:29:35,356 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:13 [2020-12-09 14:29:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:35,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:35,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903039513] [2020-12-09 14:29:35,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:35,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:29:35,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474897664] [2020-12-09 14:29:35,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:29:35,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:35,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:29:35,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:29:35,373 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 6 states. [2020-12-09 14:29:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:43,555 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-09 14:29:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:29:43,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 14:29:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:43,556 INFO L225 Difference]: With dead ends: 48 [2020-12-09 14:29:43,556 INFO L226 Difference]: Without dead ends: 48 [2020-12-09 14:29:43,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:29:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-09 14:29:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-12-09 14:29:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 14:29:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-09 14:29:43,558 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 13 [2020-12-09 14:29:43,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:43,558 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-09 14:29:43,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:29:43,558 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-09 14:29:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 14:29:43,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:43,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:43,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 14:29:43,760 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:43,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:43,761 INFO L82 PathProgramCache]: Analyzing trace with hash 889860306, now seen corresponding path program 1 times [2020-12-09 14:29:43,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:43,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019340569] [2020-12-09 14:29:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:43,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:29:43,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:43,884 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 14:29:43,884 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 2 case distinctions, treesize of input 12 treesize of output 33 [2020-12-09 14:29:43,886 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:43,926 INFO L625 ElimStorePlain]: treesize reduction 12, result has 75.5 percent of original size [2020-12-09 14:29:43,940 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:43,940 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 [2020-12-09 14:29:43,941 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:43,979 INFO L625 ElimStorePlain]: treesize reduction 10, result has 80.8 percent of original size [2020-12-09 14:29:43,981 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:43,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:43,982 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 14:29:43,982 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:44 [2020-12-09 14:29:43,983 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:43,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:44,003 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:44,004 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:44,022 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 14:29:44,022 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:44,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 14:29:44,025 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-09 14:29:44,026 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-09 14:29:44,029 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:44,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 14:29:44,031 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 14:29:44,041 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 14:29:44,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 14:29:44,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 14:29:44,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 14:29:44,054 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 14:29:44,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:29:44,110 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:44,110 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 28 [2020-12-09 14:29:44,112 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:29:44,179 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:44,180 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 55 [2020-12-09 14:29:44,181 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,211 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:44,212 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2020-12-09 14:29:44,213 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,225 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:44,226 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 18 treesize of output 20 [2020-12-09 14:29:44,227 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,234 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 14:29:44,234 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 14:29:44,235 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 14:29:44,236 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2020-12-09 14:29:44,237 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 14:29:44,246 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 14:29:44,247 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2020-12-09 14:29:44,248 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,303 INFO L625 ElimStorePlain]: treesize reduction 99, result has 17.5 percent of original size [2020-12-09 14:29:44,306 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 [2020-12-09 14:29:44,308 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,317 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:44,319 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:44,319 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 5 variables, input treesize:243, output treesize:9 [2020-12-09 14:29:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:44,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:44,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019340569] [2020-12-09 14:29:44,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:44,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:29:44,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410647831] [2020-12-09 14:29:44,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:29:44,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:44,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:29:44,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:29:44,336 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2020-12-09 14:29:44,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:44,416 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-12-09 14:29:44,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:29:44,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 14:29:44,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:44,417 INFO L225 Difference]: With dead ends: 44 [2020-12-09 14:29:44,417 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 14:29:44,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:29:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 14:29:44,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2020-12-09 14:29:44,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-09 14:29:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-09 14:29:44,419 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 13 [2020-12-09 14:29:44,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:44,419 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-09 14:29:44,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:29:44,420 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-09 14:29:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 14:29:44,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:44,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:44,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 14:29:44,621 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:44,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 889859920, now seen corresponding path program 1 times [2020-12-09 14:29:44,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:44,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916271552] [2020-12-09 14:29:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:44,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 14:29:44,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:44,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:44,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916271552] [2020-12-09 14:29:44,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:44,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:29:44,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51028537] [2020-12-09 14:29:44,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:29:44,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:44,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:29:44,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:29:44,707 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 5 states. [2020-12-09 14:29:44,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:44,733 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-12-09 14:29:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:29:44,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 14:29:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:44,734 INFO L225 Difference]: With dead ends: 35 [2020-12-09 14:29:44,734 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 14:29:44,734 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 [2020-12-09 14:29:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 14:29:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-12-09 14:29:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 14:29:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-12-09 14:29:44,735 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2020-12-09 14:29:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:44,735 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-12-09 14:29:44,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:29:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-12-09 14:29:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 14:29:44,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:44,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:44,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 14:29:44,937 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:44,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1815865711, now seen corresponding path program 1 times [2020-12-09 14:29:44,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:44,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462188384] [2020-12-09 14:29:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:45,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:29:45,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:45,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:45,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462188384] [2020-12-09 14:29:45,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:45,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 14:29:45,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694172098] [2020-12-09 14:29:45,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:29:45,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:45,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:29:45,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:29:45,055 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 6 states. [2020-12-09 14:29:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:45,158 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-12-09 14:29:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:29:45,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 14:29:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:45,159 INFO L225 Difference]: With dead ends: 36 [2020-12-09 14:29:45,159 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 14:29:45,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:29:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 14:29:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-12-09 14:29:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 14:29:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-12-09 14:29:45,160 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2020-12-09 14:29:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:45,160 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-12-09 14:29:45,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:29:45,160 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-12-09 14:29:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 14:29:45,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:45,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:45,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 14:29:45,362 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:45,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:45,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1320771049, now seen corresponding path program 1 times [2020-12-09 14:29:45,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:45,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074968513] [2020-12-09 14:29:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:45,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 14:29:45,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:45,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:45,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074968513] [2020-12-09 14:29:45,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:45,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:29:45,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376433191] [2020-12-09 14:29:45,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 14:29:45,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:45,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 14:29:45,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:29:45,456 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 5 states. [2020-12-09 14:29:45,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:45,518 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-09 14:29:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:29:45,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 14:29:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:45,519 INFO L225 Difference]: With dead ends: 26 [2020-12-09 14:29:45,519 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 14:29:45,519 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 [2020-12-09 14:29:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 14:29:45,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 14:29:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 14:29:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-12-09 14:29:45,521 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2020-12-09 14:29:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:45,521 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-12-09 14:29:45,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 14:29:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-12-09 14:29:45,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 14:29:45,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:45,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:45,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-09 14:29:45,723 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:45,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1320771048, now seen corresponding path program 1 times [2020-12-09 14:29:45,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:45,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330224739] [2020-12-09 14:29:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:45,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 14:29:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:45,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:45,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330224739] [2020-12-09 14:29:45,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:45,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:29:45,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816795367] [2020-12-09 14:29:45,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:29:45,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:45,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:29:45,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:29:45,867 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 6 states. [2020-12-09 14:29:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:45,935 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-12-09 14:29:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:29:45,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 14:29:45,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:45,936 INFO L225 Difference]: With dead ends: 27 [2020-12-09 14:29:45,936 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 14:29:45,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:29:45,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 14:29:45,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-12-09 14:29:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-09 14:29:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-09 14:29:45,937 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14 [2020-12-09 14:29:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:45,937 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-09 14:29:45,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:29:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-09 14:29:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 14:29:45,937 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:45,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:46,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-09 14:29:46,139 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2005782408, now seen corresponding path program 1 times [2020-12-09 14:29:46,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:46,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215862251] [2020-12-09 14:29:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/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 [2020-12-09 14:29:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:46,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 14:29:46,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:46,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:46,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215862251] [2020-12-09 14:29:46,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:46,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:29:46,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981548851] [2020-12-09 14:29:46,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:29:46,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:46,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:29:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:29:46,219 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-12-09 14:29:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:46,227 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-12-09 14:29:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:29:46,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-09 14:29:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:46,228 INFO L225 Difference]: With dead ends: 24 [2020-12-09 14:29:46,228 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 14:29:46,228 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 [2020-12-09 14:29:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 14:29:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-09 14:29:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-09 14:29:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2020-12-09 14:29:46,229 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 15 [2020-12-09 14:29:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:46,229 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2020-12-09 14:29:46,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:29:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2020-12-09 14:29:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 14:29:46,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:46,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:46,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-12-09 14:29:46,431 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:46,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:46,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2005770458, now seen corresponding path program 1 times [2020-12-09 14:29:46,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:46,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30752694] [2020-12-09 14:29:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-12-09 14:29:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:46,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 14:29:46,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:46,545 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 [2020-12-09 14:29:46,546 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:46,547 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:46,548 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:46,548 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-12-09 14:29:46,568 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 [2020-12-09 14:29:46,568 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:46,569 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:46,570 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:46,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-09 14:29:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:46,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:46,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30752694] [2020-12-09 14:29:46,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:46,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:29:46,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641320044] [2020-12-09 14:29:46,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:29:46,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:46,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:29:46,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:29:46,579 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 8 states. [2020-12-09 14:29:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:46,697 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-12-09 14:29:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 14:29:46,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-09 14:29:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:46,698 INFO L225 Difference]: With dead ends: 23 [2020-12-09 14:29:46,698 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 14:29:46,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:29:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 14:29:46,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 14:29:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 14:29:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-12-09 14:29:46,699 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 15 [2020-12-09 14:29:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:46,699 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-12-09 14:29:46,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:29:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-12-09 14:29:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 14:29:46,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:46,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:46,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-12-09 14:29:46,901 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:46,902 INFO L82 PathProgramCache]: Analyzing trace with hash 2049342135, now seen corresponding path program 1 times [2020-12-09 14:29:46,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:46,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499234669] [2020-12-09 14:29:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-12-09 14:29:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:47,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 14:29:47,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:47,104 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 [2020-12-09 14:29:47,104 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,112 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:47,113 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,113 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:16 [2020-12-09 14:29:47,151 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 [2020-12-09 14:29:47,152 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,157 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:47,157 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,158 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:8 [2020-12-09 14:29:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:47,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:47,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499234669] [2020-12-09 14:29:47,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:47,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:29:47,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836160929] [2020-12-09 14:29:47,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 14:29:47,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:47,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 14:29:47,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:29:47,176 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 9 states. [2020-12-09 14:29:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:47,417 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-12-09 14:29:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 14:29:47,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-09 14:29:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:47,418 INFO L225 Difference]: With dead ends: 22 [2020-12-09 14:29:47,418 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 14:29:47,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:29:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 14:29:47,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 14:29:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 14:29:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-12-09 14:29:47,419 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 16 [2020-12-09 14:29:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:47,419 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-12-09 14:29:47,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 14:29:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-12-09 14:29:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 14:29:47,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:47,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:47,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-12-09 14:29:47,621 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash -894903172, now seen corresponding path program 1 times [2020-12-09 14:29:47,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:47,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851380558] [2020-12-09 14:29:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-12-09 14:29:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:47,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 14:29:47,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:47,825 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 [2020-12-09 14:29:47,825 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:47,832 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2020-12-09 14:29:47,861 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 [2020-12-09 14:29:47,862 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,866 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:47,867 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,867 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-09 14:29:47,886 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 19 treesize of output 11 [2020-12-09 14:29:47,886 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:47,888 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:47,888 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:5 [2020-12-09 14:29:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:47,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:47,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851380558] [2020-12-09 14:29:47,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:47,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:29:47,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760946453] [2020-12-09 14:29:47,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:29:47,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:29:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-09 14:29:47,898 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 8 states. [2020-12-09 14:29:48,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:48,030 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-09 14:29:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 14:29:48,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-09 14:29:48,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:48,031 INFO L225 Difference]: With dead ends: 21 [2020-12-09 14:29:48,031 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 14:29:48,031 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 [2020-12-09 14:29:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 14:29:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 14:29:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 14:29:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-12-09 14:29:48,032 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 17 [2020-12-09 14:29:48,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:48,032 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-12-09 14:29:48,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:29:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-12-09 14:29:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 14:29:48,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:48,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:48,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-12-09 14:29:48,233 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:48,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:48,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1972194466, now seen corresponding path program 1 times [2020-12-09 14:29:48,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:48,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541232844] [2020-12-09 14:29:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-12-09 14:29:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:48,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 14:29:48,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:48,327 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 14:29:48,327 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 2 case distinctions, treesize of input 12 treesize of output 33 [2020-12-09 14:29:48,328 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,344 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2020-12-09 14:29:48,345 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:48,346 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. [2020-12-09 14:29:48,346 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2020-12-09 14:29:48,346 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 14:29:48,377 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:48,377 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 19 treesize of output 41 [2020-12-09 14:29:48,379 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,388 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:48,388 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,388 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:25 [2020-12-09 14:29:48,429 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 [2020-12-09 14:29:48,429 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,437 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:48,437 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,437 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:30, output treesize:25 [2020-12-09 14:29:48,473 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 25 treesize of output 13 [2020-12-09 14:29:48,474 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:48,479 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,479 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:17 [2020-12-09 14:29:48,501 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2020-12-09 14:29:48,502 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:48,510 INFO L625 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2020-12-09 14:29:48,510 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. [2020-12-09 14:29:48,510 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-12-09 14:29:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:48,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:48,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541232844] [2020-12-09 14:29:48,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:48,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 14:29:48,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289547739] [2020-12-09 14:29:48,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 14:29:48,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:48,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 14:29:48,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:29:48,529 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 10 states. [2020-12-09 14:29:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:52,802 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-12-09 14:29:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 14:29:52,802 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-12-09 14:29:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:52,803 INFO L225 Difference]: With dead ends: 20 [2020-12-09 14:29:52,803 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 14:29:52,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-09 14:29:52,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 14:29:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 14:29:52,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 14:29:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-12-09 14:29:52,804 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 18 [2020-12-09 14:29:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:52,804 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-12-09 14:29:52,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 14:29:52,804 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-12-09 14:29:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 14:29:52,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:29:52,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:29:53,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-12-09 14:29:53,005 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2020-12-09 14:29:53,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:29:53,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1008486270, now seen corresponding path program 1 times [2020-12-09 14:29:53,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:29:53,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208366917] [2020-12-09 14:29:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-12-09 14:29:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:29:53,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 14:29:53,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:29:53,187 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 [2020-12-09 14:29:53,188 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:53,194 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:53,195 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:53,195 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:20 [2020-12-09 14:29:53,227 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 27 treesize of output 15 [2020-12-09 14:29:53,228 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 14:29:53,231 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 14:29:53,232 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 14:29:53,232 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:12 [2020-12-09 14:29:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:29:53,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:29:53,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208366917] [2020-12-09 14:29:53,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:29:53,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 14:29:53,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221123399] [2020-12-09 14:29:53,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 14:29:53,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:29:53,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 14:29:53,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:29:53,268 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 9 states. [2020-12-09 14:29:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:29:53,593 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-12-09 14:29:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 14:29:53,594 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-12-09 14:29:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:29:53,594 INFO L225 Difference]: With dead ends: 19 [2020-12-09 14:29:53,594 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:29:53,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-12-09 14:29:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:29:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:29:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:29:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:29:53,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-12-09 14:29:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:29:53,595 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:29:53,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 14:29:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:29:53,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:29:53,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-12-09 14:29:53,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:29:53 BoogieIcfgContainer [2020-12-09 14:29:53,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:29:53,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:29:53,803 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:29:53,803 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:29:53,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:29:29" (3/4) ... [2020-12-09 14:29:53,805 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:29:53,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 14:29:53,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 14:29:53,814 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 14:29:53,839 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_11fb11b5-112c-487e-996c-7ff3d96e36ca/bin/utaipan/witness.graphml [2020-12-09 14:29:53,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:29:53,840 INFO L168 Benchmark]: Toolchain (without parser) took 24716.53 ms. Allocated memory was 65.0 MB in the beginning and 104.9 MB in the end (delta: 39.8 MB). Free memory was 44.7 MB in the beginning and 51.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:53,840 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 47.7 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:29:53,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.12 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 44.5 MB in the beginning and 53.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:53,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.63 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:53,841 INFO L168 Benchmark]: Boogie Preprocessor took 21.28 ms. Allocated memory is still 83.9 MB. Free memory was 51.1 MB in the beginning and 49.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:53,841 INFO L168 Benchmark]: RCFGBuilder took 321.80 ms. Allocated memory is still 83.9 MB. Free memory was 49.3 MB in the beginning and 52.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:53,842 INFO L168 Benchmark]: TraceAbstraction took 23815.82 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 52.6 MB in the beginning and 54.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:53,842 INFO L168 Benchmark]: Witness Printer took 36.86 ms. Allocated memory is still 104.9 MB. Free memory was 54.7 MB in the beginning and 51.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:29:53,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory was 47.8 MB in the beginning and 47.7 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 477.12 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 44.5 MB in the beginning and 53.2 MB in the end (delta: -8.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.63 ms. Allocated memory is still 83.9 MB. Free memory was 53.2 MB in the beginning and 51.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.28 ms. Allocated memory is still 83.9 MB. Free memory was 51.1 MB in the beginning and 49.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 321.80 ms. Allocated memory is still 83.9 MB. Free memory was 49.3 MB in the beginning and 52.6 MB in the end (delta: -3.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23815.82 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 52.6 MB in the beginning and 54.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 36.86 ms. Allocated memory is still 104.9 MB. Free memory was 54.7 MB in the beginning and 51.7 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: 781]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 789]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds 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: 789]: 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: 791]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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 - 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]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.7s, OverallIterations: 23, TraceHistogramMax: 1, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 618 SDtfs, 1029 SDslu, 672 SDs, 0 SdLazy, 689 SolverSat, 46 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 23 MinimizatonAttempts, 148 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 255 ConstructedInterpolants, 20 QuantifiedInterpolants, 32427 SizeOfPredicates, 121 NumberOfNonLiveVariables, 1254 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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...