./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_add-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb ............................................................................................................................................ 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_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:33:28,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:33:28,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:33:28,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:33:28,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:33:28,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:33:28,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:33:28,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:33:28,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:33:28,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:33:28,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:33:28,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:33:28,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:33:28,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:33:28,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:33:28,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:33:28,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:33:28,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:33:28,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:33:28,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:33:28,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:33:28,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:33:28,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:33:28,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:33:28,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:33:28,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:33:28,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:33:28,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:33:28,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:33:28,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:33:28,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:33:28,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:33:28,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:33:28,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:33:28,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:33:28,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:33:28,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:33:28,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:33:28,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:33:28,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:33:28,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:33:28,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:33:28,985 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:33:28,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:33:28,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:33:28,987 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:33:28,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:33:28,988 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:33:28,988 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:33:28,988 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:33:28,988 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:33:28,989 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:33:28,990 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:33:28,990 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:33:28,990 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:33:28,990 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:33:28,991 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:33:28,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:33:28,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:33:28,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:33:28,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:33:28,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:33:28,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:33:28,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:33:28,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:33:28,993 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:33:28,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:33:28,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:33:28,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:33:28,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:33:28,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:33:28,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:33:28,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:33:28,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:28,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:33:28,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:33:28,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:33:28,996 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:33:28,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:33:28,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:33:28,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:33:28,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:33:28,998 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_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb [2020-11-28 07:33:29,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:33:29,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:33:29,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:33:29,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:33:29,317 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:33:29,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/../../sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-28 07:33:29,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/03ead59c0/44d59e09430b4fe8904cff3d63d30150/FLAGc33db51c6 [2020-11-28 07:33:30,061 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:33:30,062 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-28 07:33:30,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/03ead59c0/44d59e09430b4fe8904cff3d63d30150/FLAGc33db51c6 [2020-11-28 07:33:30,314 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/03ead59c0/44d59e09430b4fe8904cff3d63d30150 [2020-11-28 07:33:30,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:33:30,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:33:30,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:30,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:33:30,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:33:30,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:30" (1/1) ... [2020-11-28 07:33:30,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438c92f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:30, skipping insertion in model container [2020-11-28 07:33:30,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:30" (1/1) ... [2020-11-28 07:33:30,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:33:30,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:30,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:30,728 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) [2020-11-28 07:33:30,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cd29770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:30, skipping insertion in model container [2020-11-28 07:33:30,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:30,729 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-28 07:33:30,732 INFO L168 Benchmark]: Toolchain (without parser) took 412.93 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 74.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:30,732 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:33:30,733 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.15 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 74.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:30,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.15 ms. Allocated memory is still 98.6 MB. Free memory was 69.8 MB in the beginning and 74.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 635]: 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 [2020-11-28 07:33:33,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:33:33,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:33:33,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:33:33,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:33:33,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:33:33,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:33:33,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:33:33,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:33:33,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:33:33,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:33:33,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:33:33,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:33:33,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:33:33,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:33:33,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:33:33,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:33:33,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:33:33,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:33:33,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:33:33,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:33:33,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:33:33,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:33:33,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:33:33,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:33:33,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:33:33,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:33:33,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:33:33,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:33:33,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:33:33,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:33:33,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:33:33,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:33:33,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:33:33,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:33:33,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:33:33,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:33:33,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:33:33,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:33:33,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:33:33,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:33:33,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:33:33,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:33:33,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:33:33,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:33:33,182 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:33:33,182 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:33:33,182 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:33:33,183 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:33:33,183 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:33:33,183 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:33:33,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:33:33,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:33:33,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:33:33,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:33:33,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:33:33,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:33:33,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:33:33,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:33:33,185 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:33:33,186 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:33:33,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:33:33,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:33:33,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:33:33,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:33:33,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:33:33,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:33:33,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:33:33,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:33:33,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:33:33,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:33:33,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:33:33,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:33:33,188 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:33:33,189 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:33:33,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:33:33,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:33:33,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:33:33,189 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_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb [2020-11-28 07:33:33,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:33:33,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:33:33,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:33:33,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:33:33,657 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:33:33,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/../../sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-28 07:33:33,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/37167424f/0728603b805949f8b5f730529d4386e3/FLAGf09d86fc7 [2020-11-28 07:33:34,398 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:33:34,399 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-28 07:33:34,413 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/37167424f/0728603b805949f8b5f730529d4386e3/FLAGf09d86fc7 [2020-11-28 07:33:34,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/data/37167424f/0728603b805949f8b5f730529d4386e3 [2020-11-28 07:33:34,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:33:34,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:33:34,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:34,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:33:34,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:33:34,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:34" (1/1) ... [2020-11-28 07:33:34,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7191cf4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:34, skipping insertion in model container [2020-11-28 07:33:34,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:34" (1/1) ... [2020-11-28 07:33:34,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:33:34,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:35,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:35,219 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-28 07:33:35,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:35,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:35,326 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:33:35,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:35,543 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:33:35,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35 WrapperNode [2020-11-28 07:33:35,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:35,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:35,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:33:35,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:33:35,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:35,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:33:35,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:33:35,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:33:35,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,688 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... [2020-11-28 07:33:35,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:33:35,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:33:35,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:33:35,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:33:35,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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 [2020-11-28 07:33:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:33:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:33:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-28 07:33:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:33:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-28 07:33:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 07:33:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-28 07:33:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:33:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:33:35,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:33:36,671 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:33:36,672 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-28 07:33:36,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:36 BoogieIcfgContainer [2020-11-28 07:33:36,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:33:36,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:33:36,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:33:36,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:33:36,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:33:34" (1/3) ... [2020-11-28 07:33:36,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac5d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:36, skipping insertion in model container [2020-11-28 07:33:36,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:35" (2/3) ... [2020-11-28 07:33:36,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac5d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:36, skipping insertion in model container [2020-11-28 07:33:36,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:36" (3/3) ... [2020-11-28 07:33:36,680 INFO L111 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-11-28 07:33:36,702 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:33:36,706 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:33:36,715 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:33:36,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:33:36,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:33:36,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:33:36,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:33:36,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:33:36,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:33:36,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:33:36,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:33:36,753 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-28 07:33:36,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:36,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:36,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:36,760 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1732431771, now seen corresponding path program 1 times [2020-11-28 07:33:36,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:33:36,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116265298] [2020-11-28 07:33:36,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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 [2020-11-28 07:33:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:36,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:33:36,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:36,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:36,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116265298] [2020-11-28 07:33:36,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:36,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:33:36,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746053397] [2020-11-28 07:33:36,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:33:36,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:33:36,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:33:36,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:33:36,967 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-28 07:33:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:36,984 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2020-11-28 07:33:36,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:33:36,985 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 07:33:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:36,994 INFO L225 Difference]: With dead ends: 48 [2020-11-28 07:33:36,994 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 07:33:36,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:33:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 07:33:37,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 07:33:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 07:33:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-28 07:33:37,030 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2020-11-28 07:33:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:37,031 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-28 07:33:37,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:33:37,031 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-28 07:33:37,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:37,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:37,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:37,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:33:37,246 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash 854163994, now seen corresponding path program 1 times [2020-11-28 07:33:37,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:33:37,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876276126] [2020-11-28 07:33:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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 [2020-11-28 07:33:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:37,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:33:37,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:37,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:37,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876276126] [2020-11-28 07:33:37,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:37,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:33:37,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539738516] [2020-11-28 07:33:37,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:37,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:33:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:37,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:37,461 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2020-11-28 07:33:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:37,535 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-11-28 07:33:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:37,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 07:33:37,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:37,537 INFO L225 Difference]: With dead ends: 44 [2020-11-28 07:33:37,537 INFO L226 Difference]: Without dead ends: 34 [2020-11-28 07:33:37,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:37,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-28 07:33:37,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2020-11-28 07:33:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 07:33:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-28 07:33:37,544 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2020-11-28 07:33:37,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:37,545 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-28 07:33:37,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-28 07:33:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:37,546 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:37,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:37,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:33:37,752 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1167630684, now seen corresponding path program 1 times [2020-11-28 07:33:37,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:33:37,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042765178] [2020-11-28 07:33:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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 [2020-11-28 07:33:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:37,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 07:33:37,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:38,018 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-28 07:33:38,019 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:33:38,040 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:33:38,045 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-28 07:33:38,046 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 07:33:38,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:33:38,059 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 07:33:38,059 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:12 [2020-11-28 07:33:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:38,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:38,119 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:33:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:38,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042765178] [2020-11-28 07:33:38,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:38,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:33:38,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928527040] [2020-11-28 07:33:38,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:38,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:33:38,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:38,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:33:38,246 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2020-11-28 07:33:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:38,669 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-11-28 07:33:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:33:38,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 07:33:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:38,672 INFO L225 Difference]: With dead ends: 47 [2020-11-28 07:33:38,672 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 07:33:38,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 07:33:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2020-11-28 07:33:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 07:33:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-28 07:33:38,682 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-11-28 07:33:38,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:38,682 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-28 07:33:38,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:38,682 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-28 07:33:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:33:38,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:38,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:38,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:33:38,884 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:38,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:38,885 INFO L82 PathProgramCache]: Analyzing trace with hash -456502492, now seen corresponding path program 1 times [2020-11-28 07:33:38,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:33:38,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237487048] [2020-11-28 07:33:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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 [2020-11-28 07:33:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:39,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 07:33:39,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:39,172 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-11-28 07:33:39,173 INFO L350 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2020-11-28 07:33:39,173 INFO L384 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 3 case distinctions, treesize of input 15 treesize of output 41 [2020-11-28 07:33:39,174 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:33:39,232 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.6 percent of original size [2020-11-28 07:33:39,236 INFO L603 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-11-28 07:33:39,238 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-28 07:33:39,238 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:31 [2020-11-28 07:33:39,248 INFO L603 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-11-28 07:33:39,312 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:33:39,312 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 13 treesize of output 17 [2020-11-28 07:33:39,313 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:33:39,328 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:33:39,328 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 07:33:39,329 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:11 [2020-11-28 07:33:49,862 WARN L193 SmtUtils]: Spent 10.45 s on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-11-28 07:33:49,862 INFO L350 Elim1Store]: treesize reduction 107, result has 32.3 percent of original size [2020-11-28 07:33:49,863 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 67 [2020-11-28 07:33:49,863 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:33:49,957 INFO L625 ElimStorePlain]: treesize reduction 22, result has 69.0 percent of original size [2020-11-28 07:33:49,967 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:33:49,970 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-28 07:33:49,970 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:82, output treesize:67 [2020-11-28 07:33:49,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:33:50,033 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:33:50,081 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:33:50,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 07:33:50,186 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:33:50,187 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 43 [2020-11-28 07:33:50,188 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 07:33:50,448 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-11-28 07:33:50,449 INFO L350 Elim1Store]: treesize reduction 10, result has 87.7 percent of original size [2020-11-28 07:33:50,449 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 90 [2020-11-28 07:33:50,451 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-28 07:33:50,460 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 07:33:50,466 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 07:33:50,467 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 07:33:50,467 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:95, output treesize:4 [2020-11-28 07:33:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:50,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:50,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5822 treesize of output 5758 [2020-11-28 07:33:50,607 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-28 07:33:52,175 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 141 DAG size of output: 37 [2020-11-28 07:33:52,176 INFO L625 ElimStorePlain]: treesize reduction 5585, result has 1.4 percent of original size [2020-11-28 07:33:52,207 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-28 07:33:52,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:33:52,223 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-11-28 07:33:52,223 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:82, output treesize:38 [2020-11-28 07:33:52,242 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-28 07:33:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:52,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237487048] [2020-11-28 07:33:52,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:52,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-28 07:33:52,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550715684] [2020-11-28 07:33:52,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:33:52,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:33:52,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:33:52,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:33:52,474 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-11-28 07:33:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:53,027 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-28 07:33:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:33:53,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-28 07:33:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:53,031 INFO L225 Difference]: With dead ends: 34 [2020-11-28 07:33:53,031 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 07:33:53,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:33:53,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 07:33:53,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2020-11-28 07:33:53,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:33:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-28 07:33:53,038 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-11-28 07:33:53,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:53,039 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 07:33:53,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:33:53,039 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-28 07:33:53,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:33:53,040 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:53,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:53,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:33:53,254 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:33:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash -406632358, now seen corresponding path program 1 times [2020-11-28 07:33:53,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:33:53,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539064195] [2020-11-28 07:33:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/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 [2020-11-28 07:33:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:33:53,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:33:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:33:53,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:33:53,695 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:33:53,695 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:33:53,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:33:53,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:33:53 BoogieIcfgContainer [2020-11-28 07:33:53,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:33:53,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:33:53,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:33:53,963 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:33:53,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:36" (3/4) ... [2020-11-28 07:33:53,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:33:54,044 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c5bd6ef9-5ff1-4cf2-84ef-7f9a0e7169a2/bin/utaipan/witness.graphml [2020-11-28 07:33:54,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:33:54,051 INFO L168 Benchmark]: Toolchain (without parser) took 19376.03 ms. Allocated memory was 52.4 MB in the beginning and 77.6 MB in the end (delta: 25.2 MB). Free memory was 27.9 MB in the beginning and 30.4 MB in the end (delta: -2.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:54,051 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 52.4 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:33:54,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.75 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 40.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:54,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.75 ms. Allocated memory is still 62.9 MB. Free memory was 40.1 MB in the beginning and 38.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:54,053 INFO L168 Benchmark]: Boogie Preprocessor took 89.94 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 35.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:54,053 INFO L168 Benchmark]: RCFGBuilder took 932.34 ms. Allocated memory is still 62.9 MB. Free memory was 35.9 MB in the beginning and 28.4 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:54,053 INFO L168 Benchmark]: TraceAbstraction took 17286.66 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 28.2 MB in the beginning and 33.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:54,054 INFO L168 Benchmark]: Witness Printer took 81.56 ms. Allocated memory is still 77.6 MB. Free memory was 33.9 MB in the beginning and 30.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:54,057 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 52.4 MB. Free memory was 34.5 MB in the beginning and 34.4 MB in the end (delta: 25.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 864.75 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 27.7 MB in the beginning and 40.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.75 ms. Allocated memory is still 62.9 MB. Free memory was 40.1 MB in the beginning and 38.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.94 ms. Allocated memory is still 62.9 MB. Free memory was 38.0 MB in the beginning and 35.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 932.34 ms. Allocated memory is still 62.9 MB. Free memory was 35.9 MB in the beginning and 28.4 MB in the end (delta: 7.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17286.66 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 28.2 MB in the beginning and 33.9 MB in the end (delta: -5.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 81.56 ms. Allocated memory is still 77.6 MB. Free memory was 33.9 MB in the beginning and 30.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 562]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L662] struct ldv_list_head s1 = { &(s1), &(s1) }; VAL [s1={7:0}] [L665] int j = __VERIFIER_nondet_int(); [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [s1={7:0}] [L652] COND FALSE !(&m->list != (s)) VAL [s1={7:0}] [L657] return 0; VAL [s1={7:0}] [L633] COND TRUE !ldv_is_in_set(new, s) [L634] struct ldv_list_element *le; [L576] void *ptr = malloc(size); [L565] COND FALSE !(!cond) VAL [s1={7:0}] [L578] return ptr; VAL [s1={7:0}] [L635] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L636] le->e = new [L605] head->next [L593] next->prev = new [L594] new->next = next [L595] new->prev = prev [L596] prev->next = new VAL [s1={7:0}] [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [s1={7:0}] [L652] COND TRUE &m->list != (s) [L653] EXPR m->e VAL [s1={7:0}] [L653] COND TRUE m->e == e [L654] return 1; VAL [s1={7:0}] [L667] COND TRUE ldv_is_in_set(j, &s1) [L562] COND FALSE !(0) VAL [s1={7:0}] [L562] __assert_fail ("0", "model/ldv.h", 3, __extension__ __PRETTY_FUNCTION__) VAL [s1={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 160 SDslu, 98 SDs, 0 SdLazy, 56 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 104 ConstructedInterpolants, 7 QuantifiedInterpolants, 8336 SizeOfPredicates, 50 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 49 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 incorrect! Received shutdown request...