./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 ............................................................................................................................................. 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_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:00:56,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:00:56,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:00:56,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:00:56,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:00:56,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:00:56,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:00:56,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:00:56,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:00:56,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:00:56,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:00:56,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:00:56,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:00:56,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:00:56,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:00:56,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:00:56,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:00:56,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:00:56,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:00:56,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:00:56,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:00:56,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:00:56,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:00:56,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:00:56,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:00:56,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:00:56,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:00:56,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:00:56,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:00:56,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:00:56,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:00:56,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:00:56,732 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:00:56,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:00:56,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:00:56,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:00:56,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:00:56,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:00:56,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:00:56,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:00:56,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:00:56,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 10:00:56,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:00:56,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:00:56,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:00:56,759 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:00:56,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:00:56,759 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:00:56,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:00:56,759 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:00:56,759 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:00:56,760 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:00:56,760 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:00:56,760 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:00:56,760 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:00:56,760 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:00:56,760 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:00:56,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 10:00:56,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 10:00:56,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:00:56,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:00:56,761 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 10:00:56,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:00:56,762 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:00:56,763 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:00:56,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:00:56,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:00:56,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:00:56,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:00:56,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:00:56,764 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:00:56,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:00:56,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:00:56,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:00:56,764 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_2785da37-519e-49e3-91bb-329ac083b28d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 [2020-12-09 10:00:56,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:00:56,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:00:56,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:00:56,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:00:56,957 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:00:56,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2020-12-09 10:00:57,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/2dd23f262/2aad0e027ec54ce99acbb7c45753cece/FLAG3b7b154b2 [2020-12-09 10:00:57,428 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:00:57,429 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2020-12-09 10:00:57,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/2dd23f262/2aad0e027ec54ce99acbb7c45753cece/FLAG3b7b154b2 [2020-12-09 10:00:57,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/2dd23f262/2aad0e027ec54ce99acbb7c45753cece [2020-12-09 10:00:57,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:00:57,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:00:57,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:57,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:00:57,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:00:57,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:57" (1/1) ... [2020-12-09 10:00:57,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9785bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:57, skipping insertion in model container [2020-12-09 10:00:57,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:57" (1/1) ... [2020-12-09 10:00:57,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:00:57,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:00:57,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:00:57,740 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 10:00:57,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@394f9457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:57, skipping insertion in model container [2020-12-09 10:00:57,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:57,741 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 10:00:57,742 INFO L168 Benchmark]: Toolchain (without parser) took 287.14 ms. Allocated memory is still 130.0 MB. Free memory was 94.4 MB in the beginning and 102.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:57,743 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 130.0 MB. Free memory was 103.8 MB in the beginning and 103.7 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:00:57,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.19 ms. Allocated memory is still 130.0 MB. Free memory was 94.4 MB in the beginning and 102.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:00:57,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 130.0 MB. Free memory was 103.8 MB in the beginning and 103.7 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.19 ms. Allocated memory is still 130.0 MB. Free memory was 94.4 MB in the beginning and 102.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:00:59,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:00:59,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:00:59,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:00:59,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:00:59,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:00:59,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:00:59,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:00:59,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:00:59,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:00:59,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:00:59,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:00:59,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:00:59,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:00:59,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:00:59,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:00:59,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:00:59,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:00:59,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:00:59,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:00:59,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:00:59,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:00:59,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:00:59,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:00:59,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:00:59,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:00:59,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:00:59,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:00:59,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:00:59,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:00:59,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:00:59,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:00:59,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:00:59,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:00:59,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:00:59,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:00:59,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:00:59,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:00:59,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:00:59,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:00:59,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:00:59,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 10:00:59,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:00:59,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:00:59,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:00:59,193 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:00:59,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:00:59,193 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:00:59,193 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:00:59,193 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:00:59,194 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:00:59,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 10:00:59,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 10:00:59,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:00:59,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:00:59,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:00:59,195 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 10:00:59,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 10:00:59,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:00:59,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:00:59,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:00:59,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 10:00:59,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:00:59,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:00:59,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:00:59,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:00:59,197 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 10:00:59,197 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 10:00:59,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:00:59,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:00:59,197 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_2785da37-519e-49e3-91bb-329ac083b28d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0e1098f21fb27be4a1372259b2e0fa3db81f74 [2020-12-09 10:00:59,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:00:59,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:00:59,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:00:59,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:00:59,459 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:00:59,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2020-12-09 10:00:59,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/e19335b11/97bf6985dae94f4ebdd2582558199859/FLAGabcb30995 [2020-12-09 10:00:59,931 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:00:59,931 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2020-12-09 10:00:59,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/e19335b11/97bf6985dae94f4ebdd2582558199859/FLAGabcb30995 [2020-12-09 10:00:59,953 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/data/e19335b11/97bf6985dae94f4ebdd2582558199859 [2020-12-09 10:00:59,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:00:59,956 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:00:59,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:00:59,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:00:59,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:00:59,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:59" (1/1) ... [2020-12-09 10:00:59,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2888af29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:00:59, skipping insertion in model container [2020-12-09 10:00:59,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:00:59" (1/1) ... [2020-12-09 10:00:59,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:00:59,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:01:00,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:01:00,306 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 10:01:00,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:01:00,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:01:00,372 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:01:00,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:01:00,485 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:01:00,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00 WrapperNode [2020-12-09 10:01:00,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:01:00,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:01:00,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:01:00,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:01:00,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:01:00,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:01:00,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:01:00,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:01:00,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... [2020-12-09 10:01:00,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:01:00,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:01:00,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:01:00,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:01:00,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 10:01:00,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:01:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:01:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 10:01:00,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:01:00,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:01:00,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:01:00,814 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 10:01:00,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:00 BoogieIcfgContainer [2020-12-09 10:01:00,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:01:00,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:01:00,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:01:00,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:01:00,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:00:59" (1/3) ... [2020-12-09 10:01:00,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66848d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:01:00, skipping insertion in model container [2020-12-09 10:01:00,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:01:00" (2/3) ... [2020-12-09 10:01:00,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66848d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:01:00, skipping insertion in model container [2020-12-09 10:01:00,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:00" (3/3) ... [2020-12-09 10:01:00,823 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test9.i [2020-12-09 10:01:00,835 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:01:00,838 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 10:01:00,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 10:01:00,864 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:01:00,864 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 10:01:00,864 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:01:00,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:01:00,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:01:00,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:01:00,867 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:01:00,867 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:01:00,876 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-09 10:01:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 10:01:00,881 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:00,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:00,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:00,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:00,886 INFO L82 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2020-12-09 10:01:00,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:00,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903501163] [2020-12-09 10:01:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:00,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 10:01:00,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:01,004 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 10:01:01,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:01,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903501163] [2020-12-09 10:01:01,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:01,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:01:01,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380731249] [2020-12-09 10:01:01,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:01,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:01,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:01,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:01,023 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2020-12-09 10:01:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:01,055 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-12-09 10:01:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:01:01,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 10:01:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:01,061 INFO L225 Difference]: With dead ends: 17 [2020-12-09 10:01:01,062 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 10:01:01,063 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 10:01:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 10:01:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 10:01:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 10:01:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-09 10:01:01,085 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2020-12-09 10:01:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:01,086 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-09 10:01:01,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-09 10:01:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 10:01:01,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:01,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:01,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 10:01:01,288 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:01,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2020-12-09 10:01:01,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:01,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572534568] [2020-12-09 10:01:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:01,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 10:01:01,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:01,376 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 10:01:01,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:01,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572534568] [2020-12-09 10:01:01,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:01,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:01:01,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253615082] [2020-12-09 10:01:01,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:01:01,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:01,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:01:01,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:01:01,380 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 5 states. [2020-12-09 10:01:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:01,432 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-12-09 10:01:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:01:01,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 10:01:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:01,433 INFO L225 Difference]: With dead ends: 26 [2020-12-09 10:01:01,433 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 10:01:01,434 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 10:01:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 10:01:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-12-09 10:01:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 10:01:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-09 10:01:01,438 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2020-12-09 10:01:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:01,439 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-09 10:01:01,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:01:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-09 10:01:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 10:01:01,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:01,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:01,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 10:01:01,642 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash -594059884, now seen corresponding path program 1 times [2020-12-09 10:01:01,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:01,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826813599] [2020-12-09 10:01:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:01,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:01:01,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:01,818 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 10:01:01,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:01,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826813599] [2020-12-09 10:01:01,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:01,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:01:01,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871099768] [2020-12-09 10:01:01,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:01,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:01,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:01,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:01,821 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 4 states. [2020-12-09 10:01:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:01,837 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-12-09 10:01:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 10:01:01,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 10:01:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:01,838 INFO L225 Difference]: With dead ends: 34 [2020-12-09 10:01:01,838 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 10:01:01,838 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 10:01:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 10:01:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2020-12-09 10:01:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 10:01:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-12-09 10:01:01,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 9 [2020-12-09 10:01:01,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:01,841 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-12-09 10:01:01,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-12-09 10:01:01,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 10:01:01,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:01,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:02,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 10:01:02,043 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:02,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1180938539, now seen corresponding path program 1 times [2020-12-09 10:01:02,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:02,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221881385] [2020-12-09 10:01:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:02,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 10:01:02,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:02,157 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 10:01:02,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:02,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221881385] [2020-12-09 10:01:02,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:02,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:01:02,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444227034] [2020-12-09 10:01:02,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:02,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:02,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:02,159 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-12-09 10:01:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:02,191 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-09 10:01:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:01:02,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 10:01:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:02,192 INFO L225 Difference]: With dead ends: 25 [2020-12-09 10:01:02,192 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 10:01:02,192 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 10:01:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 10:01:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-09 10:01:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 10:01:02,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-09 10:01:02,194 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2020-12-09 10:01:02,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:02,194 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-09 10:01:02,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-09 10:01:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 10:01:02,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:02,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:02,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 10:01:02,397 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:02,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:02,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1182785581, now seen corresponding path program 1 times [2020-12-09 10:01:02,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:02,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082578922] [2020-12-09 10:01:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:02,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 10:01:02,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:02,531 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 10:01:02,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:02,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082578922] [2020-12-09 10:01:02,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:02,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 10:01:02,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714783498] [2020-12-09 10:01:02,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:02,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:02,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:02,533 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 4 states. [2020-12-09 10:01:02,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:02,544 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-09 10:01:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:01:02,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 10:01:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:02,545 INFO L225 Difference]: With dead ends: 21 [2020-12-09 10:01:02,545 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 10:01:02,545 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 10:01:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 10:01:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-12-09 10:01:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 10:01:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-09 10:01:02,547 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-12-09 10:01:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:02,547 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-09 10:01:02,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-09 10:01:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 10:01:02,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:02,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:02,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 10:01:02,749 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:02,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1182794520, now seen corresponding path program 1 times [2020-12-09 10:01:02,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:02,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288906669] [2020-12-09 10:01:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:02,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:01:02,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:02,783 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 10:01:02,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:02,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288906669] [2020-12-09 10:01:02,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:02,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:01:02,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652858413] [2020-12-09 10:01:02,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:01:02,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:02,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:01:02,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:01:02,785 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-12-09 10:01:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:02,795 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-12-09 10:01:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:01:02,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 10:01:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:02,796 INFO L225 Difference]: With dead ends: 20 [2020-12-09 10:01:02,796 INFO L226 Difference]: Without dead ends: 14 [2020-12-09 10:01:02,796 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 10:01:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-12-09 10:01:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-12-09 10:01:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 10:01:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-12-09 10:01:02,798 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 9 [2020-12-09 10:01:02,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:02,798 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-12-09 10:01:02,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:01:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-12-09 10:01:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:01:02,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:02,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:02,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 10:01:03,000 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:03,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:03,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2020-12-09 10:01:03,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:03,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129970425] [2020-12-09 10:01:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:03,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 10:01:03,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:03,124 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 10:01:03,125 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:01:03,126 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:01:03,127 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 10:01:03,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 10:01:03,138 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 10:01:03,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:03,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129970425] [2020-12-09 10:01:03,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:03,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:01:03,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428115942] [2020-12-09 10:01:03,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 10:01:03,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 10:01:03,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 10:01:03,139 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 4 states. [2020-12-09 10:01:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:03,161 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-09 10:01:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 10:01:03,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 10:01:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:03,162 INFO L225 Difference]: With dead ends: 13 [2020-12-09 10:01:03,162 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 10:01:03,162 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 10:01:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 10:01:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 10:01:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 10:01:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-09 10:01:03,163 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 10 [2020-12-09 10:01:03,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:03,163 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-09 10:01:03,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 10:01:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-09 10:01:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 10:01:03,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:01:03,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:01:03,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 10:01:03,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 10:01:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:01:03,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1655975602, now seen corresponding path program 1 times [2020-12-09 10:01:03,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 10:01:03,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160364494] [2020-12-09 10:01:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/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 10:01:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:01:03,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 10:01:03,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:01:03,487 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 10:01:03,488 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 10:01:03,490 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 10:01:03,500 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 10:01:03,503 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 10:01:03,505 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 10:01:03,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 10:01:03,507 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 10:01:03,516 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 10:01:05,626 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 10:01:05,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 10:01:05,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160364494] [2020-12-09 10:01:05,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:01:05,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:01:05,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021435883] [2020-12-09 10:01:05,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 10:01:05,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:01:05,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 10:01:05,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=25, Unknown=1, NotChecked=0, Total=42 [2020-12-09 10:01:05,629 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 7 states. [2020-12-09 10:01:07,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:01:07,723 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-09 10:01:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:01:07,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-09 10:01:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:01:07,724 INFO L225 Difference]: With dead ends: 12 [2020-12-09 10:01:07,724 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:01:07,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2020-12-09 10:01:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:01:07,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:01:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:01:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:01:07,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-09 10:01:07,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:01:07,725 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:01:07,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 10:01:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:01:07,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:01:07,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 10:01:07,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:01:07 BoogieIcfgContainer [2020-12-09 10:01:07,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:01:07,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:01:07,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:01:07,933 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:01:07,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:01:00" (3/4) ... [2020-12-09 10:01:07,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:01:07,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 10:01:07,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 10:01:07,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:01:07,967 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2785da37-519e-49e3-91bb-329ac083b28d/bin/utaipan/witness.graphml [2020-12-09 10:01:07,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:01:07,968 INFO L168 Benchmark]: Toolchain (without parser) took 8011.54 ms. Allocated memory was 52.4 MB in the beginning and 81.8 MB in the end (delta: 29.4 MB). Free memory was 29.0 MB in the beginning and 24.9 MB in the end (delta: 4.1 MB). Peak memory consumption was 33.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:07,968 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:01:07,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.78 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.8 MB in the beginning and 34.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:07,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.27 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 32.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:07,969 INFO L168 Benchmark]: Boogie Preprocessor took 26.55 ms. Allocated memory is still 67.1 MB. Free memory was 32.1 MB in the beginning and 49.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:07,970 INFO L168 Benchmark]: RCFGBuilder took 255.71 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 34.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:07,970 INFO L168 Benchmark]: TraceAbstraction took 7115.35 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 27.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:07,970 INFO L168 Benchmark]: Witness Printer took 34.10 ms. Allocated memory is still 81.8 MB. Free memory was 27.7 MB in the beginning and 24.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:01:07,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 52.4 MB. Free memory was 35.7 MB in the beginning and 35.6 MB in the end (delta: 71.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 528.78 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.8 MB in the beginning and 34.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.27 ms. Allocated memory is still 67.1 MB. Free memory was 34.4 MB in the beginning and 32.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.55 ms. Allocated memory is still 67.1 MB. Free memory was 32.1 MB in the beginning and 49.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 255.71 ms. Allocated memory is still 67.1 MB. Free memory was 49.1 MB in the beginning and 34.1 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7115.35 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 33.5 MB in the beginning and 27.7 MB in the end (delta: 5.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * Witness Printer took 34.10 ms. Allocated memory is still 81.8 MB. Free memory was 27.7 MB in the beginning and 24.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 775]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 138 SDslu, 91 SDs, 0 SdLazy, 102 SolverSat, 14 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 11 QuantifiedInterpolants, 3558 SizeOfPredicates, 14 NumberOfNonLiveVariables, 296 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...