./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c --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_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 2195b79e9318debfd37e6b0067135f78488fab28 ............................................................................................................................................ 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_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 2195b79e9318debfd37e6b0067135f78488fab28 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-22 12:58:53,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:53,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:53,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:53,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:53,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:53,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:53,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:53,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:53,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:53,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:53,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:53,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:53,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:53,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:53,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:53,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:53,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:53,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:53,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:53,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:53,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:53,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:53,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:53,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:53,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:53,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:53,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:53,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:53,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:53,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:53,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:53,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:53,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:53,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:53,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:53,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:53,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:53,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:53,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:53,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:53,913 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:58:53,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:53,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:53,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:53,962 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:53,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:53,962 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:53,963 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:58:53,963 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:53,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:53,963 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:58:53,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:58:53,965 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:53,965 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:58:53,965 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:58:53,966 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:58:53,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:53,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:53,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:58:53,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:53,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:53,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:53,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:53,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:53,969 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:53,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:53,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:53,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:53,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:53,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:53,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:53,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:53,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:53,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:53,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:53,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:53,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:58:53,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:58:53,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:53,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:53,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:53,974 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_15902e1d-593e-48c3-89af-0537e419ef3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2195b79e9318debfd37e6b0067135f78488fab28 [2020-11-22 12:58:54,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:54,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:54,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:54,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:54,305 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:54,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-11-22 12:58:54,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/a3bb053b2/5cd780d2f8424d2997b984e9257ebcc5/FLAGfd2d9f7ad [2020-11-22 12:58:54,909 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:54,909 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-11-22 12:58:54,937 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/a3bb053b2/5cd780d2f8424d2997b984e9257ebcc5/FLAGfd2d9f7ad [2020-11-22 12:58:55,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/a3bb053b2/5cd780d2f8424d2997b984e9257ebcc5 [2020-11-22 12:58:55,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:55,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:55,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:55,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:55,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:55,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:55" (1/1) ... [2020-11-22 12:58:55,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5febbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:55, skipping insertion in model container [2020-11-22 12:58:55,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:55" (1/1) ... [2020-11-22 12:58:55,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:55,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:55,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:55,596 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 12:58:55,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a7b204c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:55, skipping insertion in model container [2020-11-22 12:58:55,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:55,598 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 12:58:55,600 INFO L168 Benchmark]: Toolchain (without parser) took 371.75 ms. Allocated memory is still 104.9 MB. Free memory was 74.0 MB in the beginning and 79.7 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:55,601 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory is still 33.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:58:55,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.23 ms. Allocated memory is still 104.9 MB. Free memory was 73.7 MB in the beginning and 79.7 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:58:55,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 75.5 MB. Free memory is still 33.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.23 ms. Allocated memory is still 104.9 MB. Free memory was 73.7 MB in the beginning and 79.7 MB in the end (delta: -6.0 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: 174]: 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 12:58:57,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:57,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:57,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:57,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:57,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:57,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:57,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:57,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:57,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:57,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:57,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:57,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:57,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:57,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:57,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:57,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:57,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:57,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:57,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:57,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:57,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:57,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:57,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:57,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:57,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:57,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:57,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:57,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:57,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:57,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:57,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:57,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:57,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:57,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:57,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:57,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:57,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:57,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:57,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:57,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:57,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:58:57,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:57,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:57,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:57,979 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:57,979 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:57,979 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:57,980 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:57,980 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:57,980 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:57,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:57,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:57,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:57,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:57,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:57,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:57,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:57,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:57,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:58:57,984 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:58:57,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:57,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:57,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:57,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:57,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:57,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:58:57,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:57,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:57,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:57,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:57,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:57,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:57,987 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:58:57,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:58:57,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:57,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:57,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:57,988 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_15902e1d-593e-48c3-89af-0537e419ef3b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2195b79e9318debfd37e6b0067135f78488fab28 [2020-11-22 12:58:58,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:58,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:58,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:58,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:58,394 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:58,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-11-22 12:58:58,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/910a82815/cb0212b469ab4460b544646d3fce1919/FLAGdf08242fe [2020-11-22 12:58:59,075 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:59,076 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/sv-benchmarks/c/product-lines/minepump_spec1_product34.cil.c [2020-11-22 12:58:59,092 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/910a82815/cb0212b469ab4460b544646d3fce1919/FLAGdf08242fe [2020-11-22 12:58:59,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/data/910a82815/cb0212b469ab4460b544646d3fce1919 [2020-11-22 12:58:59,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:59,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:59,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:59,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:59,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:59,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:59" (1/1) ... [2020-11-22 12:58:59,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2873b496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:59, skipping insertion in model container [2020-11-22 12:58:59,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:59" (1/1) ... [2020-11-22 12:58:59,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:59,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:59,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:59,842 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 12:58:59,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:59,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:59,954 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:59:00,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:59:00,101 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:59:00,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00 WrapperNode [2020-11-22 12:59:00,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:59:00,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:00,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:59:00,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:59:00,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:59:00,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:59:00,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:59:00,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:59:00,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... [2020-11-22 12:59:00,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:59:00,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:59:00,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:59:00,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:59:00,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 12:59:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:59:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:59:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:59:00,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:59:02,994 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:59:02,994 INFO L298 CfgBuilder]: Removed 104 assume(true) statements. [2020-11-22 12:59:02,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:02 BoogieIcfgContainer [2020-11-22 12:59:02,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:59:03,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:59:03,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:59:03,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:59:03,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:58:59" (1/3) ... [2020-11-22 12:59:03,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280aa012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:03, skipping insertion in model container [2020-11-22 12:59:03,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:59:00" (2/3) ... [2020-11-22 12:59:03,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280aa012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:59:03, skipping insertion in model container [2020-11-22 12:59:03,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:02" (3/3) ... [2020-11-22 12:59:03,010 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-11-22 12:59:03,020 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:59:03,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 12:59:03,032 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 12:59:03,057 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:59:03,057 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:59:03,057 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:59:03,057 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:59:03,057 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:59:03,058 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:59:03,058 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:59:03,058 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:59:03,072 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-11-22 12:59:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 12:59:03,078 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:03,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:03,079 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:03,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1558904107, now seen corresponding path program 1 times [2020-11-22 12:59:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:03,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627659995] [2020-11-22 12:59:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 12:59:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:03,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:59:03,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:03,355 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 12:59:03,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:03,361 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 12:59:03,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627659995] [2020-11-22 12:59:03,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:03,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:59:03,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089596725] [2020-11-22 12:59:03,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:59:03,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:03,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:59:03,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:59:03,383 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 2 states. [2020-11-22 12:59:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:03,408 INFO L93 Difference]: Finished difference Result 153 states and 230 transitions. [2020-11-22 12:59:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:59:03,409 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 12:59:03,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:03,419 INFO L225 Difference]: With dead ends: 153 [2020-11-22 12:59:03,419 INFO L226 Difference]: Without dead ends: 74 [2020-11-22 12:59:03,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:59:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-22 12:59:03,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-22 12:59:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-22 12:59:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-22 12:59:03,461 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-11-22 12:59:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:03,462 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-22 12:59:03,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:59:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-11-22 12:59:03,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:59:03,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:03,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:03,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:59:03,681 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:03,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1073231156, now seen corresponding path program 1 times [2020-11-22 12:59:03,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:03,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720023557] [2020-11-22 12:59:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 12:59:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:03,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:03,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:03,942 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 12:59:03,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:03,965 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 12:59:03,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720023557] [2020-11-22 12:59:03,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:03,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:59:03,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319755806] [2020-11-22 12:59:03,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:03,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:03,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:03,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:03,969 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 4 states. [2020-11-22 12:59:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:03,989 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-11-22 12:59:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:03,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:59:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:03,993 INFO L225 Difference]: With dead ends: 74 [2020-11-22 12:59:03,994 INFO L226 Difference]: Without dead ends: 34 [2020-11-22 12:59:03,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 12:59:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-22 12:59:04,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-22 12:59:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-22 12:59:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-11-22 12:59:04,007 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-11-22 12:59:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:04,010 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-11-22 12:59:04,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-11-22 12:59:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 12:59:04,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:04,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:04,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:59:04,226 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:04,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:04,227 INFO L82 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2020-11-22 12:59:04,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:04,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023321246] [2020-11-22 12:59:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 12:59:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:04,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:04,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:04,457 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 12:59:04,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:04,468 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 12:59:04,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023321246] [2020-11-22 12:59:04,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:04,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 12:59:04,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010455842] [2020-11-22 12:59:04,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:04,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:04,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:04,470 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 4 states. [2020-11-22 12:59:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:04,516 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-11-22 12:59:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:04,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 12:59:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:04,519 INFO L225 Difference]: With dead ends: 62 [2020-11-22 12:59:04,519 INFO L226 Difference]: Without dead ends: 34 [2020-11-22 12:59:04,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 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 12:59:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-22 12:59:04,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-22 12:59:04,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-22 12:59:04,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-11-22 12:59:04,524 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-11-22 12:59:04,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:04,525 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-11-22 12:59:04,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-11-22 12:59:04,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-22 12:59:04,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:04,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:04,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 12:59:04,739 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:04,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:04,739 INFO L82 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2020-11-22 12:59:04,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:04,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218917778] [2020-11-22 12:59:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 [2020-11-22 12:59:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:04,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:04,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:04,976 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 12:59:04,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:04,979 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 12:59:04,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218917778] [2020-11-22 12:59:04,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:04,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 12:59:04,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459229780] [2020-11-22 12:59:04,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:04,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:04,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:04,981 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-11-22 12:59:05,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:05,060 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-11-22 12:59:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:05,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-22 12:59:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:05,062 INFO L225 Difference]: With dead ends: 83 [2020-11-22 12:59:05,062 INFO L226 Difference]: Without dead ends: 55 [2020-11-22 12:59:05,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-22 12:59:05,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-11-22 12:59:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 12:59:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-11-22 12:59:05,077 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-11-22 12:59:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:05,078 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-11-22 12:59:05,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:05,078 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-11-22 12:59:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-22 12:59:05,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:05,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:05,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 12:59:05,296 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:05,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:05,296 INFO L82 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2020-11-22 12:59:05,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:05,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044873276] [2020-11-22 12:59:05,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/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 [2020-11-22 12:59:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:05,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:59:05,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:05,549 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 12:59:05,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:05,576 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 12:59:05,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044873276] [2020-11-22 12:59:05,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:05,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 12:59:05,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500017027] [2020-11-22 12:59:05,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:05,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:05,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:05,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:05,578 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-11-22 12:59:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:05,670 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-11-22 12:59:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:59:05,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-22 12:59:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:05,676 INFO L225 Difference]: With dead ends: 139 [2020-11-22 12:59:05,676 INFO L226 Difference]: Without dead ends: 92 [2020-11-22 12:59:05,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:05,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-22 12:59:05,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-11-22 12:59:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-22 12:59:05,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-11-22 12:59:05,684 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-11-22 12:59:05,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:05,684 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-11-22 12:59:05,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:05,684 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-11-22 12:59:05,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-22 12:59:05,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:05,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:05,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 12:59:05,901 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:05,902 INFO L82 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2020-11-22 12:59:05,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:05,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390211366] [2020-11-22 12:59:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 12:59:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:06,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:59:06,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:06,133 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 12:59:06,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:06,139 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 12:59:06,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390211366] [2020-11-22 12:59:06,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:06,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 12:59:06,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516548122] [2020-11-22 12:59:06,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:06,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:06,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:06,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:06,142 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2020-11-22 12:59:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:06,311 INFO L93 Difference]: Finished difference Result 270 states and 384 transitions. [2020-11-22 12:59:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 12:59:06,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-11-22 12:59:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:06,322 INFO L225 Difference]: With dead ends: 270 [2020-11-22 12:59:06,322 INFO L226 Difference]: Without dead ends: 220 [2020-11-22 12:59:06,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:59:06,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-22 12:59:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 100. [2020-11-22 12:59:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-22 12:59:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 137 transitions. [2020-11-22 12:59:06,351 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 137 transitions. Word has length 29 [2020-11-22 12:59:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:06,351 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 137 transitions. [2020-11-22 12:59:06,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 137 transitions. [2020-11-22 12:59:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:59:06,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:06,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:06,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 12:59:06,572 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:06,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1166654740, now seen corresponding path program 1 times [2020-11-22 12:59:06,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:06,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641393368] [2020-11-22 12:59:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-22 12:59:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:06,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 12:59:06,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:06,803 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 12:59:06,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:06,808 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 12:59:06,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641393368] [2020-11-22 12:59:06,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:06,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 12:59:06,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076624745] [2020-11-22 12:59:06,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:59:06,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:59:06,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:06,811 INFO L87 Difference]: Start difference. First operand 100 states and 137 transitions. Second operand 5 states. [2020-11-22 12:59:07,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:07,028 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2020-11-22 12:59:07,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:59:07,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-22 12:59:07,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:07,031 INFO L225 Difference]: With dead ends: 280 [2020-11-22 12:59:07,031 INFO L226 Difference]: Without dead ends: 278 [2020-11-22 12:59:07,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:59:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-11-22 12:59:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 100. [2020-11-22 12:59:07,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-22 12:59:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2020-11-22 12:59:07,064 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 30 [2020-11-22 12:59:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:07,065 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2020-11-22 12:59:07,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:59:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2020-11-22 12:59:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:59:07,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:07,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:07,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 12:59:07,268 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:07,268 INFO L82 PathProgramCache]: Analyzing trace with hash 72774503, now seen corresponding path program 1 times [2020-11-22 12:59:07,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:07,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552589533] [2020-11-22 12:59:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-22 12:59:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:07,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 12:59:07,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:07,484 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 12:59:07,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:07,519 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 12:59:07,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552589533] [2020-11-22 12:59:07,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:07,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:59:07,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173981330] [2020-11-22 12:59:07,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:59:07,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:07,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:59:07,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:59:07,521 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand 6 states. [2020-11-22 12:59:07,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:07,580 INFO L93 Difference]: Finished difference Result 276 states and 374 transitions. [2020-11-22 12:59:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:59:07,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-11-22 12:59:07,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:07,582 INFO L225 Difference]: With dead ends: 276 [2020-11-22 12:59:07,582 INFO L226 Difference]: Without dead ends: 182 [2020-11-22 12:59:07,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:59:07,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-22 12:59:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 104. [2020-11-22 12:59:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-11-22 12:59:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2020-11-22 12:59:07,605 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 30 [2020-11-22 12:59:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:07,605 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2020-11-22 12:59:07,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:59:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2020-11-22 12:59:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 12:59:07,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:07,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:07,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 12:59:07,827 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:07,827 INFO L82 PathProgramCache]: Analyzing trace with hash 330939941, now seen corresponding path program 1 times [2020-11-22 12:59:07,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:07,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793803139] [2020-11-22 12:59:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-22 12:59:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:08,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:08,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:08,053 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 12:59:08,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:08,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:08,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793803139] [2020-11-22 12:59:08,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:08,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 12:59:08,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287567340] [2020-11-22 12:59:08,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:08,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:59:08,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:08,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:08,084 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 4 states. [2020-11-22 12:59:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:08,168 INFO L93 Difference]: Finished difference Result 334 states and 452 transitions. [2020-11-22 12:59:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:08,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-22 12:59:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:08,172 INFO L225 Difference]: With dead ends: 334 [2020-11-22 12:59:08,172 INFO L226 Difference]: Without dead ends: 236 [2020-11-22 12:59:08,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 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 12:59:08,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-11-22 12:59:08,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 186. [2020-11-22 12:59:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-11-22 12:59:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 249 transitions. [2020-11-22 12:59:08,222 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 249 transitions. Word has length 30 [2020-11-22 12:59:08,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:08,222 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 249 transitions. [2020-11-22 12:59:08,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 249 transitions. [2020-11-22 12:59:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-22 12:59:08,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:08,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:08,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-22 12:59:08,441 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:08,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:08,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1676876253, now seen corresponding path program 1 times [2020-11-22 12:59:08,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:59:08,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879892442] [2020-11-22 12:59:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-22 12:59:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:59:09,862 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:59:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:59:11,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:59:11,472 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:59:11,472 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:59:11,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-22 12:59:11,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:11 BoogieIcfgContainer [2020-11-22 12:59:11,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:11,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:11,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:11,847 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:11,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:59:02" (3/4) ... [2020-11-22 12:59:11,849 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:59:11,942 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15902e1d-593e-48c3-89af-0537e419ef3b/bin/utaipan/witness.graphml [2020-11-22 12:59:11,943 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:11,944 INFO L168 Benchmark]: Toolchain (without parser) took 12567.36 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 28.3 MB in the beginning and 37.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:11,945 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:11,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.38 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 37.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:11,946 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.32 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 34.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:11,947 INFO L168 Benchmark]: Boogie Preprocessor took 83.22 ms. Allocated memory is still 62.9 MB. Free memory was 34.8 MB in the beginning and 32.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:11,947 INFO L168 Benchmark]: RCFGBuilder took 2715.84 ms. Allocated memory is still 62.9 MB. Free memory was 32.4 MB in the beginning and 34.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:11,948 INFO L168 Benchmark]: TraceAbstraction took 8844.33 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 33.7 MB in the beginning and 49.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:11,948 INFO L168 Benchmark]: Witness Printer took 95.87 ms. Allocated memory is still 92.3 MB. Free memory was 49.9 MB in the beginning and 37.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:11,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 23.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 724.38 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 37.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.32 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 34.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 83.22 ms. Allocated memory is still 62.9 MB. Free memory was 34.8 MB in the beginning and 32.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2715.84 ms. Allocated memory is still 62.9 MB. Free memory was 32.4 MB in the beginning and 34.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8844.33 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 33.7 MB in the beginning and 49.9 MB in the end (delta: -16.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. * Witness Printer took 95.87 ms. Allocated memory is still 92.3 MB. Free memory was 49.9 MB in the beginning and 37.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L315] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int waterLevel = 1; [L527] int methaneLevelCritical = 0; [L691] int pumpRunning = 0; [L692] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] int retValue_acc ; [L907] retValue_acc = 1 [L908] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L622] int splverifierCounter ; [L623] int tmp ; [L624] int tmp___0 ; [L625] int tmp___1 ; [L626] int tmp___2 ; [L629] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L631] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L639] tmp = __VERIFIER_nondet_int() [L641] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L544] COND TRUE waterLevel < 2 [L545] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L649] tmp___0 = __VERIFIER_nondet_int() [L651] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L556] COND FALSE !(\read(methaneLevelCritical)) [L559] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L659] tmp___2 = __VERIFIER_nondet_int() [L661] COND TRUE \read(tmp___2) [L847] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L699] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L706] COND TRUE \read(systemActive) [L728] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L731] COND TRUE ! pumpRunning [L825] int retValue_acc ; [L826] int tmp ; [L827] int tmp___0 ; [L606] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L609] COND FALSE !(waterLevel < 2) [L613] retValue_acc = 0 [L614] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L831] tmp = isHighWaterSensorDry() [L833] COND FALSE !(\read(tmp)) [L836] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L838] retValue_acc = tmp___0 [L839] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L733] tmp = isHighWaterLevel() [L735] COND TRUE \read(tmp) [L756] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L853] int tmp ; [L854] int tmp___0 ; [L565] int retValue_acc ; [L568] retValue_acc = methaneLevelCritical [L569] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L858] tmp = isMethaneLevelCritical() [L860] COND TRUE \read(tmp) [L780] int retValue_acc ; [L783] retValue_acc = pumpRunning [L784] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L862] tmp___0 = isPumpRunning() [L864] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product34.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 583 SDtfs, 781 SDslu, 910 SDs, 0 SdLazy, 111 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 464 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 257 NumberOfCodeBlocks, 257 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 19716 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1825 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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...