./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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 134c0db99ce5251339642354d8ec6411765b7878 .............................................................................................................................................. 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_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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 134c0db99ce5251339642354d8ec6411765b7878 ...................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:07:39,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:39,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:39,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:39,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:39,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:39,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:39,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:39,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:39,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:39,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:39,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:39,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:39,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:39,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:39,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:39,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:39,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:39,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:39,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:39,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:39,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:39,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:39,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:39,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:39,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:39,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:39,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:39,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:39,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:39,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:39,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:39,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:39,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:39,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:39,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:39,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:39,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:39,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:39,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:39,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:39,857 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:07:39,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:39,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:39,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:39,901 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:39,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:39,901 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:39,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:07:39,901 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:39,901 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:39,902 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:07:39,903 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:07:39,903 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:39,903 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:07:39,903 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:07:39,903 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:07:39,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:07:39,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:07:39,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:39,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:39,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:07:39,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:07:39,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:39,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:39,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:07:39,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:07:39,906 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:07:39,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:39,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:39,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:39,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:39,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:39,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:39,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:39,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:39,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:39,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:39,908 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:07:39,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:07:39,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:39,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:39,915 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_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2020-11-22 13:07:40,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:40,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:40,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:40,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:40,189 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:40,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-22 13:07:40,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/bcd1b4175/2edb0eada56b4752b4b24620a9af964a/FLAG745531662 [2020-11-22 13:07:40,748 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:40,749 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-22 13:07:40,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/bcd1b4175/2edb0eada56b4752b4b24620a9af964a/FLAG745531662 [2020-11-22 13:07:41,092 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/bcd1b4175/2edb0eada56b4752b4b24620a9af964a [2020-11-22 13:07:41,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:41,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:41,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:41,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:41,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:41,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74402406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41, skipping insertion in model container [2020-11-22 13:07:41,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:41" (1/1) ... [2020-11-22 13:07:41,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:41,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:41,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:41,493 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) [2020-11-22 13:07:41,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ba2c3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:41, skipping insertion in model container [2020-11-22 13:07:41,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:41,495 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:07:41,497 INFO L168 Benchmark]: Toolchain (without parser) took 399.56 ms. Allocated memory is still 121.6 MB. Free memory was 92.5 MB in the beginning and 98.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:41,498 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:41,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.10 ms. Allocated memory is still 121.6 MB. Free memory was 92.2 MB in the beginning and 98.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:41,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 49.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.10 ms. Allocated memory is still 121.6 MB. Free memory was 92.2 MB in the beginning and 98.8 MB in the end (delta: -6.6 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: 535]: 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-a4ecdab [2020-11-22 13:07:43,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:07:43,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:07:43,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:07:43,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:07:43,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:07:43,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:07:43,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:07:43,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:07:43,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:07:43,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:07:43,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:07:43,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:07:43,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:07:43,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:07:43,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:07:43,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:07:43,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:07:43,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:07:43,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:07:43,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:07:43,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:07:43,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:07:43,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:07:43,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:07:43,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:07:43,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:07:43,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:07:43,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:07:43,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:07:43,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:07:43,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:07:43,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:07:43,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:07:43,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:07:43,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:07:43,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:07:43,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:07:43,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:07:43,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:07:43,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:07:43,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:07:43,754 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:07:43,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:07:43,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:07:43,757 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:07:43,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:07:43,758 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:07:43,758 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:07:43,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:07:43,759 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:07:43,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:07:43,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:07:43,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:07:43,761 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:07:43,762 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:07:43,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:07:43,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:07:43,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:07:43,762 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:07:43,763 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:07:43,763 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:07:43,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:07:43,763 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:07:43,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:07:43,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:07:43,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:07:43,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:07:43,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:07:43,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:07:43,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:07:43,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:07:43,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:07:43,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:07:43,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:07:43,789 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:07:43,789 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:07:43,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:07:43,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:07:43,790 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_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134c0db99ce5251339642354d8ec6411765b7878 [2020-11-22 13:07:44,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:07:44,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:07:44,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:07:44,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:07:44,220 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:07:44,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/../../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-22 13:07:44,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/47af0c710/0f56df82e9884446849d2ebfdbe9fe6d/FLAG20a0a0896 [2020-11-22 13:07:44,905 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:07:44,906 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2020-11-22 13:07:44,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/47af0c710/0f56df82e9884446849d2ebfdbe9fe6d/FLAG20a0a0896 [2020-11-22 13:07:45,170 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/data/47af0c710/0f56df82e9884446849d2ebfdbe9fe6d [2020-11-22 13:07:45,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:07:45,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:07:45,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:45,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:07:45,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:07:45,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537da15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45, skipping insertion in model container [2020-11-22 13:07:45,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:07:45,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:45,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:45,603 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:07:45,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:07:45,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:45,673 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:07:45,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:07:45,768 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:07:45,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45 WrapperNode [2020-11-22 13:07:45,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:07:45,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:45,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:07:45,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:07:45,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:07:45,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:07:45,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:07:45,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:07:45,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... [2020-11-22 13:07:45,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:07:45,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:07:45,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:07:45,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:07:45,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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 [2020-11-22 13:07:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:07:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:07:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:07:45,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:07:45,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:07:45,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:07:46,973 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:07:46,973 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 13:07:46,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:46 BoogieIcfgContainer [2020-11-22 13:07:46,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:07:46,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:07:46,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:07:46,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:07:46,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:07:45" (1/3) ... [2020-11-22 13:07:46,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2640e7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:46, skipping insertion in model container [2020-11-22 13:07:46,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:07:45" (2/3) ... [2020-11-22 13:07:46,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2640e7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:07:46, skipping insertion in model container [2020-11-22 13:07:46,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:46" (3/3) ... [2020-11-22 13:07:46,983 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2020-11-22 13:07:46,992 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:07:46,996 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 27 error locations. [2020-11-22 13:07:47,005 INFO L253 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2020-11-22 13:07:47,021 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:07:47,021 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:07:47,021 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:07:47,021 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:07:47,021 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:07:47,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:07:47,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:07:47,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:07:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-22 13:07:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:07:47,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:47,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:47,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-22 13:07:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:47,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2020-11-22 13:07:47,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:47,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594376766] [2020-11-22 13:07:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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 [2020-11-22 13:07:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:47,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:07:47,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:47,389 INFO L350 Elim1Store]: treesize reduction 93, result has 20.5 percent of original size [2020-11-22 13:07:47,390 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2020-11-22 13:07:47,392 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:07:47,414 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:07:47,424 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-22 13:07:47,424 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:33 [2020-11-22 13:07:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:47,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:47,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594376766] [2020-11-22 13:07:47,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:47,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 13:07:47,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324005787] [2020-11-22 13:07:47,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:07:47,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:47,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:07:47,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:47,553 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-11-22 13:07:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:47,877 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-11-22 13:07:47,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:07:47,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 13:07:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:47,888 INFO L225 Difference]: With dead ends: 64 [2020-11-22 13:07:47,888 INFO L226 Difference]: Without dead ends: 62 [2020-11-22 13:07:47,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:07:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-22 13:07:47,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-22 13:07:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-22 13:07:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-11-22 13:07:47,915 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 7 [2020-11-22 13:07:47,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:47,915 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-11-22 13:07:47,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:07:47,915 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-11-22 13:07:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:07:47,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:47,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:48,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:07:48,118 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-22 13:07:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:48,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-11-22 13:07:48,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:48,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255161526] [2020-11-22 13:07:48,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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 [2020-11-22 13:07:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:07:48,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:07:48,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:07:48,277 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_33|], 4=[|v_#valid_44|]} [2020-11-22 13:07:48,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:07:48,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:07:48,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:07:48,364 INFO L350 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2020-11-22 13:07:48,365 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 21 [2020-11-22 13:07:48,365 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:07:48,404 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:07:48,430 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:07:48,430 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2020-11-22 13:07:48,432 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:07:48,475 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:07:48,479 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-22 13:07:48,479 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:41, output treesize:39 [2020-11-22 13:07:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:48,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:07:48,755 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-22 13:07:48,756 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-22 13:07:48,757 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:07:48,836 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:07:48,858 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:07:48,858 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2020-11-22 13:07:48,863 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:07:48,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:07:48,933 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:07:48,934 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:07:48,949 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-11-22 13:07:48,949 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:47, output treesize:11 [2020-11-22 13:07:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:07:49,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255161526] [2020-11-22 13:07:49,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:07:49,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 13:07:49,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139157714] [2020-11-22 13:07:49,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:07:49,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:07:49,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:07:49,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:07:49,016 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 8 states. [2020-11-22 13:07:50,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:07:50,863 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2020-11-22 13:07:50,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:07:50,864 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-11-22 13:07:50,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:07:50,867 INFO L225 Difference]: With dead ends: 237 [2020-11-22 13:07:50,867 INFO L226 Difference]: Without dead ends: 237 [2020-11-22 13:07:50,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:07:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-11-22 13:07:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 68. [2020-11-22 13:07:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-22 13:07:50,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2020-11-22 13:07:50,887 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 7 [2020-11-22 13:07:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:07:50,887 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2020-11-22 13:07:50,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:07:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2020-11-22 13:07:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:07:50,888 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:07:50,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:07:51,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:07:51,094 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr24REQUIRES_VIOLATION, ULTIMATE.startErr22REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr25REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr23REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-22 13:07:51,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:07:51,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-11-22 13:07:51,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:07:51,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510990801] [2020-11-22 13:07:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/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 [2020-11-22 13:07:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:51,170 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:07:51,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:07:51,226 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:07:51,226 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:07:51,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:07:51,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:07:51 BoogieIcfgContainer [2020-11-22 13:07:51,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:07:51,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:07:51,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:07:51,441 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:07:51,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:07:46" (3/4) ... [2020-11-22 13:07:51,442 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:07:51,490 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d56c4bd6-3d4d-43e5-8332-7196f76a14a4/bin/utaipan/witness.graphml [2020-11-22 13:07:51,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:07:51,492 INFO L168 Benchmark]: Toolchain (without parser) took 6316.54 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 43.9 MB in the beginning and 60.4 MB in the end (delta: -16.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:51,493 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:51,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.08 ms. Allocated memory is still 79.7 MB. Free memory was 43.7 MB in the beginning and 47.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:51,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.80 ms. Allocated memory is still 79.7 MB. Free memory was 47.9 MB in the beginning and 45.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:51,494 INFO L168 Benchmark]: Boogie Preprocessor took 53.61 ms. Allocated memory is still 79.7 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:51,495 INFO L168 Benchmark]: RCFGBuilder took 1065.08 ms. Allocated memory is still 79.7 MB. Free memory was 44.0 MB in the beginning and 39.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:51,495 INFO L168 Benchmark]: TraceAbstraction took 4463.48 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 39.3 MB in the beginning and 62.5 MB in the end (delta: -23.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:07:51,496 INFO L168 Benchmark]: Witness Printer took 50.26 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 60.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:07:51,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 79.7 MB. Free memory was 61.7 MB in the beginning and 61.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 589.08 ms. Allocated memory is still 79.7 MB. Free memory was 43.7 MB in the beginning and 47.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.80 ms. Allocated memory is still 79.7 MB. Free memory was 47.9 MB in the beginning and 45.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.61 ms. Allocated memory is still 79.7 MB. Free memory was 45.6 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1065.08 ms. Allocated memory is still 79.7 MB. Free memory was 44.0 MB in the beginning and 39.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4463.48 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 39.3 MB in the beginning and 62.5 MB in the end (delta: -23.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 50.26 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 60.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 542]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) [L532] COND TRUE M < 1 [L533] M = 1 [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; [L540] COND TRUE i < N [L542] size[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 27 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 387 SDslu, 288 SDs, 0 SdLazy, 250 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, 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, 2 MinimizatonAttempts, 169 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 1404 SizeOfPredicates, 14 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 incorrect! Received shutdown request...