./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.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_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ............................................................................................................................................ 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_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:47:44,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:47:44,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:47:44,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:47:44,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:47:44,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:47:44,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:47:45,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:47:45,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:47:45,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:47:45,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:47:45,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:47:45,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:47:45,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:47:45,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:47:45,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:47:45,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:47:45,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:47:45,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:47:45,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:47:45,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:47:45,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:47:45,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:47:45,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:47:45,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:47:45,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:47:45,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:47:45,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:47:45,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:47:45,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:47:45,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:47:45,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:47:45,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:47:45,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:47:45,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:47:45,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:47:45,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:47:45,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:47:45,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:47:45,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:47:45,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:47:45,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 09:47:45,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:47:45,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:47:45,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:47:45,050 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:47:45,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:47:45,050 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:47:45,050 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:47:45,050 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:47:45,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:47:45,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:47:45,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:47:45,051 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:47:45,051 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:47:45,051 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:47:45,051 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:47:45,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 09:47:45,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 09:47:45,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:47:45,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:47:45,052 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 09:47:45,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:47:45,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:47:45,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:47:45,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:47:45,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:47:45,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:47:45,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:47:45,054 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:47:45,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:47:45,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:47:45,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:47:45,055 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_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2020-12-09 09:47:45,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:47:45,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:47:45,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:47:45,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:47:45,255 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:47:45,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-12-09 09:47:45,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/403673a19/5b9ba55b8274427f98ff1777188b36f9/FLAG1ae8077ad [2020-12-09 09:47:45,703 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:47:45,704 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-12-09 09:47:45,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/403673a19/5b9ba55b8274427f98ff1777188b36f9/FLAG1ae8077ad [2020-12-09 09:47:45,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/403673a19/5b9ba55b8274427f98ff1777188b36f9 [2020-12-09 09:47:45,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:47:45,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:47:45,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:47:45,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:47:45,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:47:45,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:47:45" (1/1) ... [2020-12-09 09:47:45,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b2b71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:45, skipping insertion in model container [2020-12-09 09:47:45,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:47:45" (1/1) ... [2020-12-09 09:47:45,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:47:45,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:47:46,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:47:46,020 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 09:47:46,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78d0907a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:46, skipping insertion in model container [2020-12-09 09:47:46,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:47:46,021 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 09:47:46,022 INFO L168 Benchmark]: Toolchain (without parser) took 294.19 ms. Allocated memory is still 88.1 MB. Free memory was 58.5 MB in the beginning and 61.8 MB in the end (delta: -3.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:47:46,023 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 88.1 MB. Free memory was 45.4 MB in the beginning and 45.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:47:46,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.40 ms. Allocated memory is still 88.1 MB. Free memory was 58.3 MB in the beginning and 61.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:47:46,024 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 88.1 MB. Free memory was 45.4 MB in the beginning and 45.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.40 ms. Allocated memory is still 88.1 MB. Free memory was 58.3 MB in the beginning and 61.8 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:47:47,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:47:47,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:47:47,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:47:47,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:47:47,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:47:47,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:47:47,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:47:47,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:47:47,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:47:47,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:47:47,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:47:47,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:47:47,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:47:47,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:47:47,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:47:47,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:47:47,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:47:47,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:47:47,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:47:47,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:47:47,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:47:47,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:47:47,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:47:47,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:47:47,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:47:47,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:47:47,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:47:47,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:47:47,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:47:47,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:47:47,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:47:47,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:47:47,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:47:47,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:47:47,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:47:47,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:47:47,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:47:47,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:47:47,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:47:47,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:47:47,434 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 09:47:47,452 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:47:47,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:47:47,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:47:47,453 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:47:47,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:47:47,453 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:47:47,454 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:47:47,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:47:47,454 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:47:47,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 09:47:47,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 09:47:47,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:47:47,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:47:47,455 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 09:47:47,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:47:47,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:47:47,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:47:47,455 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 09:47:47,455 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 09:47:47,456 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 09:47:47,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:47:47,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:47:47,456 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 09:47:47,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 09:47:47,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:47:47,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:47:47,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:47:47,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 09:47:47,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:47:47,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:47:47,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:47:47,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:47:47,457 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 09:47:47,457 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 09:47:47,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:47:47,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:47:47,458 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_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2020-12-09 09:47:47,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:47:47,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:47:47,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:47:47,704 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:47:47,704 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:47:47,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-12-09 09:47:47,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/9537ac261/a06d9b6984af4dc0b0cd91beee6a4ba9/FLAGa7d95c653 [2020-12-09 09:47:48,175 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:47:48,176 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2020-12-09 09:47:48,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/9537ac261/a06d9b6984af4dc0b0cd91beee6a4ba9/FLAGa7d95c653 [2020-12-09 09:47:48,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/bin/utaipan/data/9537ac261/a06d9b6984af4dc0b0cd91beee6a4ba9 [2020-12-09 09:47:48,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:47:48,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:47:48,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:47:48,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:47:48,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:47:48,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335488f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48, skipping insertion in model container [2020-12-09 09:47:48,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:47:48,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:47:48,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:47:48,512 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 09:47:48,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:47:48,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:47:48,560 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:47:48,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:47:48,680 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:47:48,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48 WrapperNode [2020-12-09 09:47:48,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:47:48,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:47:48,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:47:48,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:47:48,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:47:48,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:47:48,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:47:48,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:47:48,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... [2020-12-09 09:47:48,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:47:48,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:47:48,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:47:48,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:47:48,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 09:47:48,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 09:47:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:47:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 09:47:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 09:47:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 09:47:48,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:47:48,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:47:49,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:47:49,072 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-09 09:47:49,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:47:49 BoogieIcfgContainer [2020-12-09 09:47:49,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:47:49,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:47:49,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:47:49,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:47:49,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:47:48" (1/3) ... [2020-12-09 09:47:49,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee4049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:47:49, skipping insertion in model container [2020-12-09 09:47:49,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:47:48" (2/3) ... [2020-12-09 09:47:49,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fee4049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:47:49, skipping insertion in model container [2020-12-09 09:47:49,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:47:49" (3/3) ... [2020-12-09 09:47:49,078 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2020-12-09 09:47:49,087 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:47:49,090 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-12-09 09:47:49,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-12-09 09:47:49,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:47:49,110 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 09:47:49,110 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:47:49,110 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:47:49,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:47:49,111 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:47:49,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:47:49,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:47:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-09 09:47:49,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:47:49,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:49,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:49,124 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 09:47:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:49,128 INFO L82 PathProgramCache]: Analyzing trace with hash 119409031, now seen corresponding path program 1 times [2020-12-09 09:47:49,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:49,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554577299] [2020-12-09 09:47:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:49,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:47:49,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:49,258 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 09:47:49,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:49,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554577299] [2020-12-09 09:47:49,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:49,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:47:49,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461474839] [2020-12-09 09:47:49,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:47:49,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:49,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:47:49,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:47:49,279 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-12-09 09:47:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:49,346 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-12-09 09:47:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:47:49,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 09:47:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:49,355 INFO L225 Difference]: With dead ends: 71 [2020-12-09 09:47:49,355 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 09:47:49,356 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 09:47:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 09:47:49,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2020-12-09 09:47:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 09:47:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-09 09:47:49,381 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-09 09:47:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:49,381 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-09 09:47:49,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:47:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-09 09:47:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:47:49,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:49,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:49,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 09:47:49,583 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 09:47:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:49,584 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2020-12-09 09:47:49,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:49,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116932170] [2020-12-09 09:47:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:49,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:47:49,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:49,647 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 09:47:49,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:49,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116932170] [2020-12-09 09:47:49,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:49,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:47:49,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470462773] [2020-12-09 09:47:49,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:47:49,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:47:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:47:49,651 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-09 09:47:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:49,673 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-12-09 09:47:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:47:49,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 09:47:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:49,675 INFO L225 Difference]: With dead ends: 36 [2020-12-09 09:47:49,675 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 09:47:49,676 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 09:47:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 09:47:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-09 09:47:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 09:47:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-09 09:47:49,679 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2020-12-09 09:47:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:49,680 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-09 09:47:49,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:47:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-09 09:47:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:47:49,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:49,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:49,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 09:47:49,882 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 09:47:49,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:49,884 INFO L82 PathProgramCache]: Analyzing trace with hash 176667333, now seen corresponding path program 1 times [2020-12-09 09:47:49,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:49,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940990151] [2020-12-09 09:47:49,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:50,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:47:50,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:50,099 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 09:47:50,099 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 09:47:50,103 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:50,123 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2020-12-09 09:47:50,128 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:50,130 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 09:47:50,130 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2020-12-09 09:47:50,132 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:50,148 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 09:47:50,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:50,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940990151] [2020-12-09 09:47:50,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:50,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 09:47:50,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142547986] [2020-12-09 09:47:50,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:47:50,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:47:50,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:47:50,150 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2020-12-09 09:47:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:50,208 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-12-09 09:47:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:47:50,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 09:47:50,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:50,209 INFO L225 Difference]: With dead ends: 49 [2020-12-09 09:47:50,210 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 09:47:50,210 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 09:47:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 09:47:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-12-09 09:47:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 09:47:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-12-09 09:47:50,215 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 8 [2020-12-09 09:47:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:50,215 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-12-09 09:47:50,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:47:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-12-09 09:47:50,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:47:50,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:50,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:50,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 09:47:50,418 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 09:47:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:50,420 INFO L82 PathProgramCache]: Analyzing trace with hash 176667334, now seen corresponding path program 1 times [2020-12-09 09:47:50,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:50,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284446305] [2020-12-09 09:47:50,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:50,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 09:47:50,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:50,524 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:50,524 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 09:47:50,528 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:50,548 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-12-09 09:47:50,550 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 09:47:50,550 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:11 [2020-12-09 09:47:50,566 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 09:47:50,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:50,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284446305] [2020-12-09 09:47:50,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:50,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 09:47:50,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992525670] [2020-12-09 09:47:50,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:47:50,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:47:50,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:47:50,568 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 3 states. [2020-12-09 09:47:50,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:50,635 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-09 09:47:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:47:50,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 09:47:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:50,636 INFO L225 Difference]: With dead ends: 70 [2020-12-09 09:47:50,636 INFO L226 Difference]: Without dead ends: 70 [2020-12-09 09:47:50,636 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 09:47:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-09 09:47:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2020-12-09 09:47:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 09:47:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2020-12-09 09:47:50,641 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 8 [2020-12-09 09:47:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:50,641 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2020-12-09 09:47:50,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:47:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2020-12-09 09:47:50,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:47:50,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:50,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:50,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 09:47:50,844 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 09:47:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:50,845 INFO L82 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2020-12-09 09:47:50,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:50,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480669875] [2020-12-09 09:47:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:50,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:47:50,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:50,961 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 09:47:50,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:50,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480669875] [2020-12-09 09:47:50,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:50,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:47:50,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950195228] [2020-12-09 09:47:50,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:47:50,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:47:50,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:47:50,963 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand 5 states. [2020-12-09 09:47:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:50,997 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2020-12-09 09:47:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:47:50,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 09:47:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:50,998 INFO L225 Difference]: With dead ends: 63 [2020-12-09 09:47:50,998 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 09:47:50,998 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 09:47:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 09:47:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2020-12-09 09:47:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 09:47:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-12-09 09:47:51,002 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 8 [2020-12-09 09:47:51,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:51,003 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-12-09 09:47:51,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:47:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-12-09 09:47:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:47:51,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:51,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:51,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 09:47:51,205 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 09:47:51,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:51,206 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2020-12-09 09:47:51,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:51,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042868561] [2020-12-09 09:47:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:51,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:47:51,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:51,330 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 09:47:51,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:51,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042868561] [2020-12-09 09:47:51,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:51,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:47:51,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876234173] [2020-12-09 09:47:51,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:47:51,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:51,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:47:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:47:51,332 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 5 states. [2020-12-09 09:47:51,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:51,395 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-12-09 09:47:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:47:51,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 09:47:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:51,396 INFO L225 Difference]: With dead ends: 71 [2020-12-09 09:47:51,397 INFO L226 Difference]: Without dead ends: 71 [2020-12-09 09:47:51,397 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 09:47:51,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-09 09:47:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-12-09 09:47:51,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 09:47:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2020-12-09 09:47:51,401 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 9 [2020-12-09 09:47:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:51,401 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2020-12-09 09:47:51,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:47:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2020-12-09 09:47:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:47:51,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:51,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:51,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 09:47:51,603 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 09:47:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:51,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1181720059, now seen corresponding path program 1 times [2020-12-09 09:47:51,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:51,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047523826] [2020-12-09 09:47:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:51,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:47:51,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:51,673 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 09:47:51,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:51,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047523826] [2020-12-09 09:47:51,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:51,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:47:51,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089184463] [2020-12-09 09:47:51,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:47:51,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:47:51,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:47:51,675 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand 3 states. [2020-12-09 09:47:51,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:51,714 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2020-12-09 09:47:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:47:51,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 09:47:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:51,715 INFO L225 Difference]: With dead ends: 73 [2020-12-09 09:47:51,715 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 09:47:51,715 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 09:47:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 09:47:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2020-12-09 09:47:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-09 09:47:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-12-09 09:47:51,719 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 9 [2020-12-09 09:47:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:51,719 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-12-09 09:47:51,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:47:51,719 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2020-12-09 09:47:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:47:51,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:51,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:51,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 09:47:51,921 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 09:47:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:51,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1182786029, now seen corresponding path program 1 times [2020-12-09 09:47:51,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:51,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630336753] [2020-12-09 09:47:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:52,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 09:47:52,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:52,030 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 09:47:52,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:52,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630336753] [2020-12-09 09:47:52,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:52,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:47:52,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359061170] [2020-12-09 09:47:52,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:47:52,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:52,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:47:52,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:47:52,032 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 4 states. [2020-12-09 09:47:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:52,055 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-12-09 09:47:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:47:52,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 09:47:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:52,059 INFO L225 Difference]: With dead ends: 38 [2020-12-09 09:47:52,059 INFO L226 Difference]: Without dead ends: 36 [2020-12-09 09:47:52,059 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 09:47:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-09 09:47:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-09 09:47:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 09:47:52,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-09 09:47:52,061 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 9 [2020-12-09 09:47:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:52,061 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-09 09:47:52,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:47:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-09 09:47:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:47:52,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:52,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:52,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 09:47:52,263 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 09:47:52,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:52,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2020-12-09 09:47:52,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:52,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673961560] [2020-12-09 09:47:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:52,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:47:52,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:52,364 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 09:47:52,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:52,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:52,367 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 09:47:52,367 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 09:47:52,378 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 09:47:52,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:52,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673961560] [2020-12-09 09:47:52,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:52,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:47:52,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013037322] [2020-12-09 09:47:52,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:47:52,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:52,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:47:52,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:47:52,380 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2020-12-09 09:47:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:52,428 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-12-09 09:47:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:47:52,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 09:47:52,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:52,429 INFO L225 Difference]: With dead ends: 47 [2020-12-09 09:47:52,429 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 09:47:52,429 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 09:47:52,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 09:47:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-12-09 09:47:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 09:47:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-09 09:47:52,431 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-09 09:47:52,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:52,431 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-09 09:47:52,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:47:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-09 09:47:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:47:52,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:52,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:52,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 09:47:52,633 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 09:47:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:52,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2020-12-09 09:47:52,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:52,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100890500] [2020-12-09 09:47:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:52,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:47:52,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:52,762 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 09:47:52,763 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 09:47:52,764 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:52,781 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2020-12-09 09:47:52,783 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:52,784 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 09:47:52,784 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2020-12-09 09:47:52,785 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:52,818 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:52,818 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-12-09 09:47:52,821 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:52,826 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:52,830 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 09:47:52,830 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:17 [2020-12-09 09:47:52,872 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 09:47:52,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:52,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100890500] [2020-12-09 09:47:52,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:52,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:47:52,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984045781] [2020-12-09 09:47:52,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:47:52,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:52,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:47:52,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:47:52,874 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-12-09 09:47:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:52,952 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-09 09:47:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:47:52,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 09:47:52,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:52,952 INFO L225 Difference]: With dead ends: 46 [2020-12-09 09:47:52,952 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 09:47:52,953 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 09:47:52,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 09:47:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2020-12-09 09:47:52,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 09:47:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-12-09 09:47:52,955 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 10 [2020-12-09 09:47:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:52,955 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-12-09 09:47:52,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:47:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-12-09 09:47:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:47:52,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:52,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:53,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 09:47:53,157 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 09:47:53,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:53,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2020-12-09 09:47:53,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:53,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196417957] [2020-12-09 09:47:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:53,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:47:53,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:53,316 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:53,316 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 09:47:53,318 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,342 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.0 percent of original size [2020-12-09 09:47:53,373 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 09:47:53,373 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 09:47:53,374 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,406 INFO L625 ElimStorePlain]: treesize reduction 12, result has 77.8 percent of original size [2020-12-09 09:47:53,408 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:47:53,409 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:47:53,410 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 09:47:53,410 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:44 [2020-12-09 09:47:53,411 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:47:53,412 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:47:53,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:47:53,432 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:47:53,532 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:53,534 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:53,535 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:47:53,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 09:47:53,578 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:53,579 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 19 treesize of output 46 [2020-12-09 09:47:53,581 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 09:47:53,593 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 09:47:53,594 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 09:47:53,601 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 09:47:53,602 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,692 INFO L625 ElimStorePlain]: treesize reduction 18, result has 83.0 percent of original size [2020-12-09 09:47:53,705 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:53,705 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 09:47:53,706 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,728 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:53,728 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 16 treesize of output 34 [2020-12-09 09:47:53,730 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,734 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 09:47:53,734 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 09:47:53,735 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:53,761 INFO L625 ElimStorePlain]: treesize reduction 26, result has 40.9 percent of original size [2020-12-09 09:47:53,762 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 09:47:53,763 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:95, output treesize:9 [2020-12-09 09:47:53,779 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 09:47:53,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:53,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196417957] [2020-12-09 09:47:53,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:53,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:47:53,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29608100] [2020-12-09 09:47:53,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:47:53,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:53,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:47:53,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:47:53,780 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-12-09 09:47:53,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:53,918 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-12-09 09:47:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:47:53,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 09:47:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:53,919 INFO L225 Difference]: With dead ends: 44 [2020-12-09 09:47:53,919 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 09:47:53,919 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 09:47:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 09:47:53,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2020-12-09 09:47:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 09:47:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-09 09:47:53,921 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 10 [2020-12-09 09:47:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:53,921 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-09 09:47:53,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:47:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-09 09:47:53,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 09:47:53,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:53,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:54,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 09:47:54,123 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 09:47:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:54,125 INFO L82 PathProgramCache]: Analyzing trace with hash 905839516, now seen corresponding path program 1 times [2020-12-09 09:47:54,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:54,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808144513] [2020-12-09 09:47:54,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:54,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:47:54,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:54,222 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 09:47:54,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:54,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808144513] [2020-12-09 09:47:54,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:54,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:47:54,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972641685] [2020-12-09 09:47:54,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:47:54,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:54,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:47:54,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:47:54,223 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2020-12-09 09:47:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:47:54,243 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-12-09 09:47:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:47:54,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 09:47:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:47:54,244 INFO L225 Difference]: With dead ends: 38 [2020-12-09 09:47:54,244 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 09:47:54,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 09:47:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 09:47:54,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-12-09 09:47:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 09:47:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-12-09 09:47:54,246 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 12 [2020-12-09 09:47:54,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:47:54,247 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-12-09 09:47:54,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:47:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-12-09 09:47:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:47:54,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:47:54,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:47:54,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 09:47:54,449 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 09:47:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:47:54,450 INFO L82 PathProgramCache]: Analyzing trace with hash 889860305, now seen corresponding path program 1 times [2020-12-09 09:47:54,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:47:54,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360966743] [2020-12-09 09:47:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:47:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:47:54,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 09:47:54,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:47:54,571 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 09:47:54,571 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 09:47:54,573 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:54,590 INFO L625 ElimStorePlain]: treesize reduction 12, result has 67.6 percent of original size [2020-12-09 09:47:54,592 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:54,592 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 09:47:54,593 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:25 [2020-12-09 09:47:54,594 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 09:47:54,621 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:54,621 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 09:47:54,624 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:54,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:47:54,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 09:47:54,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:19 [2020-12-09 09:47:54,668 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 09:47:54,670 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:47:54,677 INFO L625 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2020-12-09 09:47:54,678 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 09:47:54,678 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-12-09 09:47:54,696 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 09:47:54,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:47:54,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360966743] [2020-12-09 09:47:54,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:47:54,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:47:54,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210334332] [2020-12-09 09:47:54,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:47:54,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:47:54,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:47:54,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:47:54,697 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2020-12-09 09:48:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:48:02,873 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2020-12-09 09:48:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:48:02,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 09:48:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:48:02,874 INFO L225 Difference]: With dead ends: 50 [2020-12-09 09:48:02,874 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 09:48:02,874 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 09:48:02,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 09:48:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2020-12-09 09:48:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 09:48:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-12-09 09:48:02,876 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 13 [2020-12-09 09:48:02,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:48:02,876 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-12-09 09:48:02,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:48:02,876 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-12-09 09:48:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:48:02,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:48:02,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:48:03,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 09:48:03,078 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 09:48:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:48:03,079 INFO L82 PathProgramCache]: Analyzing trace with hash 889860306, now seen corresponding path program 1 times [2020-12-09 09:48:03,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:48:03,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469325113] [2020-12-09 09:48:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:48:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:48:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 09:48:03,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:48:03,251 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 09:48:03,251 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 09:48:03,252 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,287 INFO L625 ElimStorePlain]: treesize reduction 12, result has 75.5 percent of original size [2020-12-09 09:48:03,299 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:48:03,300 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 09:48:03,301 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,334 INFO L625 ElimStorePlain]: treesize reduction 10, result has 80.8 percent of original size [2020-12-09 09:48:03,335 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:48:03,336 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:48:03,337 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 09:48:03,337 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:44 [2020-12-09 09:48:03,338 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:48:03,339 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:48:03,358 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:48:03,359 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:48:03,377 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 09:48:03,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:48:03,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:48:03,380 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-09 09:48:03,381 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 7 disjuncts [2020-12-09 09:48:03,383 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:48:03,384 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:48:03,386 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-09 09:48:03,399 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:48:03,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 09:48:03,406 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:48:03,408 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:48:03,409 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-09 09:48:03,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 09:48:03,455 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:48:03,455 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 09:48:03,457 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 09:48:03,522 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:48:03,522 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 09:48:03,525 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,560 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:48:03,561 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 09:48:03,562 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,576 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:48:03,577 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 09:48:03,578 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,585 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 09:48:03,585 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 09:48:03,586 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 09:48:03,587 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 09:48:03,588 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 09:48:03,595 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-09 09:48:03,596 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 09:48:03,597 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,642 INFO L625 ElimStorePlain]: treesize reduction 99, result has 17.5 percent of original size [2020-12-09 09:48:03,645 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 09:48:03,646 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-09 09:48:03,654 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:48:03,655 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 09:48:03,656 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 5 variables, input treesize:243, output treesize:9 [2020-12-09 09:48:03,675 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 09:48:03,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:48:03,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469325113] [2020-12-09 09:48:03,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:48:03,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:48:03,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73131102] [2020-12-09 09:48:03,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:48:03,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:48:03,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:48:03,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:48:03,677 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 4 states. [2020-12-09 09:48:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:48:03,756 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-12-09 09:48:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:48:03,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-09 09:48:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:48:03,757 INFO L225 Difference]: With dead ends: 46 [2020-12-09 09:48:03,757 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 09:48:03,757 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 09:48:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 09:48:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2020-12-09 09:48:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 09:48:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-12-09 09:48:03,759 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2020-12-09 09:48:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:48:03,759 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-12-09 09:48:03,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:48:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-12-09 09:48:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:48:03,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:48:03,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:48:03,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 09:48:03,961 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 09:48:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:48:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash 889859920, now seen corresponding path program 1 times [2020-12-09 09:48:03,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:48:03,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661726721] [2020-12-09 09:48:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:48:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:48:04,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:48:04,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:48:04,028 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 09:48:04,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:48:04,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661726721] [2020-12-09 09:48:04,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:48:04,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 09:48:04,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177414755] [2020-12-09 09:48:04,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:48:04,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:48:04,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:48:04,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:48:04,030 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 5 states. [2020-12-09 09:48:04,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:48:04,068 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-12-09 09:48:04,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:48:04,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 09:48:04,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:48:04,069 INFO L225 Difference]: With dead ends: 37 [2020-12-09 09:48:04,069 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 09:48:04,069 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 09:48:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 09:48:04,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-12-09 09:48:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 09:48:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-12-09 09:48:04,071 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2020-12-09 09:48:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:48:04,071 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-12-09 09:48:04,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:48:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-12-09 09:48:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:48:04,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:48:04,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:48:04,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 09:48:04,273 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 09:48:04,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:48:04,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1983734109, now seen corresponding path program 1 times [2020-12-09 09:48:04,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:48:04,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780102930] [2020-12-09 09:48:04,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2e36c066-a93d-47ab-8d49-d5e6eae381aa/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 09:48:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:48:04,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:48:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:48:04,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:48:04,368 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 09:48:04,368 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:48:04,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-09 09:48:04,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:48:04 BoogieIcfgContainer [2020-12-09 09:48:04,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:48:04,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:48:04,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:48:04,599 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:48:04,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:47:49" (3/4) ... [2020-12-09 09:48:04,603 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 09:48:04,603 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:48:04,604 INFO L168 Benchmark]: Toolchain (without parser) took 16402.53 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 43.1 MB in the beginning and 56.0 MB in the end (delta: -13.0 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-12-09 09:48:04,604 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:48:04,605 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.47 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 42.8 MB in the beginning and 49.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:48:04,605 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.15 ms. Allocated memory is still 81.8 MB. Free memory was 49.7 MB in the beginning and 47.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:48:04,606 INFO L168 Benchmark]: Boogie Preprocessor took 27.30 ms. Allocated memory is still 81.8 MB. Free memory was 47.3 MB in the beginning and 46.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:48:04,606 INFO L168 Benchmark]: RCFGBuilder took 313.52 ms. Allocated memory is still 81.8 MB. Free memory was 45.6 MB in the beginning and 49.1 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:48:04,606 INFO L168 Benchmark]: TraceAbstraction took 15524.42 ms. Allocated memory is still 81.8 MB. Free memory was 48.6 MB in the beginning and 56.0 MB in the end (delta: -7.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:48:04,607 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 81.8 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:48:04,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory is still 46.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.47 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 42.8 MB in the beginning and 49.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.15 ms. Allocated memory is still 81.8 MB. Free memory was 49.7 MB in the beginning and 47.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.30 ms. Allocated memory is still 81.8 MB. Free memory was 47.3 MB in the beginning and 46.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 313.52 ms. Allocated memory is still 81.8 MB. Free memory was 45.6 MB in the beginning and 49.1 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15524.42 ms. Allocated memory is still 81.8 MB. Free memory was 48.6 MB in the beginning and 56.0 MB in the end (delta: -7.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.53 ms. Allocated memory is still 81.8 MB. Free memory is still 56.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L764] int ret = - -3; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L758] return __VERIFIER_nondet_int(); [L768] ret = f6() [L769] COND FALSE !(ret<0) [L761] return __VERIFIER_nondet_int(); [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={7:0}, ldv_global_msg_list={3:0}] [L789] a6.p = 0 VAL [a6={7:0}, ldv_global_msg_list={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 480 SDtfs, 654 SDslu, 538 SDs, 0 SdLazy, 367 SolverSat, 21 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s 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, 15 MinimizatonAttempts, 149 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 133 ConstructedInterpolants, 13 QuantifiedInterpolants, 10275 SizeOfPredicates, 38 NumberOfNonLiveVariables, 709 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...