./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.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_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 9380fcd5e8279275d54611c820c997d6cd3c87ac ............................................................................................................................................ 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_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 9380fcd5e8279275d54611c820c997d6cd3c87ac .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:05:46,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:46,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:46,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:46,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:46,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:46,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:46,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:46,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:46,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:46,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:46,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:46,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:46,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:46,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:46,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:46,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:46,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:46,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:46,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:46,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:46,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:46,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:46,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:46,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:46,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:46,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:46,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:46,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:46,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:46,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:46,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:46,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:46,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:46,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:46,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:46,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:46,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:46,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:46,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:46,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:46,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:47,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:47,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:47,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:47,003 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:47,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:47,003 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:47,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:47,004 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:47,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:47,004 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:47,004 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:47,004 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:47,005 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:47,005 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:47,005 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:47,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:47,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:47,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:47,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:47,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:47,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:47,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:47,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:47,007 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:47,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:47,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:47,007 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:47,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:47,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:47,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:47,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:47,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:47,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:47,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:47,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:47,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:47,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:47,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:47,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:47,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:47,014 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_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9380fcd5e8279275d54611c820c997d6cd3c87ac [2020-11-22 13:05:47,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:47,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:47,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:47,314 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:47,315 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:47,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-11-22 13:05:47,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/b8f6a4e2f/1d7be8484866481084243488c296ab24/FLAG239531adf [2020-11-22 13:05:47,879 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:47,879 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-11-22 13:05:47,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/b8f6a4e2f/1d7be8484866481084243488c296ab24/FLAG239531adf [2020-11-22 13:05:48,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/b8f6a4e2f/1d7be8484866481084243488c296ab24 [2020-11-22 13:05:48,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:48,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:48,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:48,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:48,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:48,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:48" (1/1) ... [2020-11-22 13:05:48,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcc6ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:48, skipping insertion in model container [2020-11-22 13:05:48,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:48" (1/1) ... [2020-11-22 13:05:48,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:48,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:48,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:48,765 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-11-22 13:05:48,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d5c6020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:48, skipping insertion in model container [2020-11-22 13:05:48,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:48,768 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:05:48,771 INFO L168 Benchmark]: Toolchain (without parser) took 410.97 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 46.3 MB in the beginning and 83.7 MB in the end (delta: -37.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:48,772 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:48,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.44 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 46.1 MB in the beginning and 83.7 MB in the end (delta: -37.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:48,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 56.1 MB in the beginning and 56.1 MB in the end (delta: 24.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.44 ms. Allocated memory was 79.7 MB in the beginning and 109.1 MB in the end (delta: 29.4 MB). Free memory was 46.1 MB in the beginning and 83.7 MB in the end (delta: -37.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 352]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:51,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:51,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:51,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:51,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:51,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:51,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:51,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:51,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:51,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:51,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:51,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:51,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:51,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:51,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:51,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:51,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:51,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:51,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:51,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:51,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:51,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:51,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:51,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:51,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:51,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:51,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:51,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:51,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:51,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:51,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:51,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:51,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:51,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:51,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:51,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:51,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:51,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:51,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:51,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:51,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:51,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:05:51,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:51,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:51,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:51,140 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:51,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:51,140 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:51,141 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:51,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:51,141 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:51,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:51,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:51,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:51,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:51,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:51,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:51,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:51,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:51,145 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:05:51,145 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:05:51,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:51,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:51,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:51,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:51,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:51,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:05:51,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:51,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:51,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:51,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:51,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:51,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:51,148 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:05:51,149 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:05:51,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:51,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:51,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:51,150 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_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9380fcd5e8279275d54611c820c997d6cd3c87ac [2020-11-22 13:05:51,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:51,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:51,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:51,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:51,590 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:51,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-11-22 13:05:51,661 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/9efa48bfd/fcd44e3b117f4a68acce02c91c937394/FLAG639cc4f09 [2020-11-22 13:05:52,275 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:52,275 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-11-22 13:05:52,299 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/9efa48bfd/fcd44e3b117f4a68acce02c91c937394/FLAG639cc4f09 [2020-11-22 13:05:52,617 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/data/9efa48bfd/fcd44e3b117f4a68acce02c91c937394 [2020-11-22 13:05:52,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:52,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:52,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:52,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:52,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:52,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:52" (1/1) ... [2020-11-22 13:05:52,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e4be05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:52, skipping insertion in model container [2020-11-22 13:05:52,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:52" (1/1) ... [2020-11-22 13:05:52,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:52,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:53,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:53,094 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:05:53,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:53,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:53,205 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:53,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:53,324 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:53,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53 WrapperNode [2020-11-22 13:05:53,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:53,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:53,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:53,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:53,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:53,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:53,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:53,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:53,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... [2020-11-22 13:05:53,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:53,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:53,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:53,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:53,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:53,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:05:53,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:53,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:56,000 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:56,000 INFO L298 CfgBuilder]: Removed 198 assume(true) statements. [2020-11-22 13:05:56,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:56 BoogieIcfgContainer [2020-11-22 13:05:56,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:56,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:56,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:56,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:56,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:52" (1/3) ... [2020-11-22 13:05:56,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e32872f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:56, skipping insertion in model container [2020-11-22 13:05:56,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:53" (2/3) ... [2020-11-22 13:05:56,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e32872f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:56, skipping insertion in model container [2020-11-22 13:05:56,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:56" (3/3) ... [2020-11-22 13:05:56,016 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-11-22 13:05:56,026 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:56,031 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:05:56,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:05:56,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:56,079 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:56,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:56,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:56,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:56,080 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:56,080 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:56,080 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-11-22 13:05:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:05:56,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:56,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:56,100 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:56,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:56,106 INFO L82 PathProgramCache]: Analyzing trace with hash -175303324, now seen corresponding path program 1 times [2020-11-22 13:05:56,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:56,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532587568] [2020-11-22 13:05:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:56,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:05:56,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:56,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:56,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532587568] [2020-11-22 13:05:56,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:56,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:05:56,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651326952] [2020-11-22 13:05:56,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:05:56,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:56,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:05:56,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:05:56,388 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2020-11-22 13:05:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:56,420 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2020-11-22 13:05:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:05:56,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 13:05:56,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:56,432 INFO L225 Difference]: With dead ends: 255 [2020-11-22 13:05:56,432 INFO L226 Difference]: Without dead ends: 125 [2020-11-22 13:05:56,435 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 13:05:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-22 13:05:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-11-22 13:05:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-11-22 13:05:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-11-22 13:05:56,477 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2020-11-22 13:05:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:56,478 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-11-22 13:05:56,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:05:56,478 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-11-22 13:05:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:05:56,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:56,479 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 13:05:56,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:05:56,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:56,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1222060221, now seen corresponding path program 1 times [2020-11-22 13:05:56,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:56,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105067237] [2020-11-22 13:05:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:56,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:56,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:56,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:56,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105067237] [2020-11-22 13:05:56,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:56,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:05:56,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779456020] [2020-11-22 13:05:56,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:56,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:56,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:56,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:56,951 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 4 states. [2020-11-22 13:05:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:56,975 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2020-11-22 13:05:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:56,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:05:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:56,977 INFO L225 Difference]: With dead ends: 125 [2020-11-22 13:05:56,977 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 13:05:56,978 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 13:05:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 13:05:56,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-22 13:05:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-22 13:05:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-11-22 13:05:56,994 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2020-11-22 13:05:56,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:56,996 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-11-22 13:05:56,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-11-22 13:05:56,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:05:56,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:56,998 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 13:05:57,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:05:57,215 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:57,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2019078694, now seen corresponding path program 1 times [2020-11-22 13:05:57,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:57,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788855115] [2020-11-22 13:05:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 13:05:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:57,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:57,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:57,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:57,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788855115] [2020-11-22 13:05:57,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:57,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 13:05:57,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175627084] [2020-11-22 13:05:57,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:05:57,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:57,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:05:57,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:05:57,443 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 4 states. [2020-11-22 13:05:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:57,465 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2020-11-22 13:05:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:57,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 13:05:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:57,467 INFO L225 Difference]: With dead ends: 96 [2020-11-22 13:05:57,469 INFO L226 Difference]: Without dead ends: 51 [2020-11-22 13:05:57,470 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 13:05:57,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-22 13:05:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-22 13:05:57,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-22 13:05:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-11-22 13:05:57,483 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2020-11-22 13:05:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:57,483 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-11-22 13:05:57,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:05:57,484 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-11-22 13:05:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 13:05:57,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:57,485 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] [2020-11-22 13:05:57,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:05:57,693 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:57,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1511639432, now seen corresponding path program 1 times [2020-11-22 13:05:57,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:57,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9961335] [2020-11-22 13:05:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 13:05:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:57,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:57,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:57,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:57,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9961335] [2020-11-22 13:05:57,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:57,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:05:57,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284473801] [2020-11-22 13:05:57,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:57,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:57,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:57,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:57,877 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-11-22 13:05:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:57,930 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2020-11-22 13:05:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:57,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-22 13:05:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:57,932 INFO L225 Difference]: With dead ends: 117 [2020-11-22 13:05:57,932 INFO L226 Difference]: Without dead ends: 72 [2020-11-22 13:05:57,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 13:05:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-22 13:05:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-11-22 13:05:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-22 13:05:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-11-22 13:05:57,942 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2020-11-22 13:05:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:57,943 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-11-22 13:05:57,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:57,943 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-11-22 13:05:57,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-22 13:05:57,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:57,944 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 13:05:58,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:05:58,160 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash 406595852, now seen corresponding path program 1 times [2020-11-22 13:05:58,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:58,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593553448] [2020-11-22 13:05:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 13:05:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:58,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:05:58,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:58,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:58,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593553448] [2020-11-22 13:05:58,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:58,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 13:05:58,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509852251] [2020-11-22 13:05:58,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:05:58,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:58,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:05:58,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:05:58,408 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 8 states. [2020-11-22 13:05:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:58,794 INFO L93 Difference]: Finished difference Result 518 states and 751 transitions. [2020-11-22 13:05:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 13:05:58,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-22 13:05:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:58,800 INFO L225 Difference]: With dead ends: 518 [2020-11-22 13:05:58,801 INFO L226 Difference]: Without dead ends: 454 [2020-11-22 13:05:58,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:05:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-11-22 13:05:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 169. [2020-11-22 13:05:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-11-22 13:05:58,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 234 transitions. [2020-11-22 13:05:58,861 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 234 transitions. Word has length 30 [2020-11-22 13:05:58,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:58,861 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 234 transitions. [2020-11-22 13:05:58,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:05:58,862 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 234 transitions. [2020-11-22 13:05:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-22 13:05:58,870 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:58,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:05:59,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:05:59,092 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:59,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:59,093 INFO L82 PathProgramCache]: Analyzing trace with hash -334162626, now seen corresponding path program 1 times [2020-11-22 13:05:59,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:59,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447667445] [2020-11-22 13:05:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 13:05:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:59,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:05:59,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:05:59,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:05:59,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447667445] [2020-11-22 13:05:59,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:59,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:05:59,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816440892] [2020-11-22 13:05:59,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:59,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:05:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:59,381 INFO L87 Difference]: Start difference. First operand 169 states and 234 transitions. Second operand 5 states. [2020-11-22 13:05:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:59,504 INFO L93 Difference]: Finished difference Result 458 states and 627 transitions. [2020-11-22 13:05:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:05:59,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-11-22 13:05:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:59,506 INFO L225 Difference]: With dead ends: 458 [2020-11-22 13:05:59,507 INFO L226 Difference]: Without dead ends: 295 [2020-11-22 13:05:59,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 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 13:05:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-11-22 13:05:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 184. [2020-11-22 13:05:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-11-22 13:05:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 249 transitions. [2020-11-22 13:05:59,549 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 249 transitions. Word has length 51 [2020-11-22 13:05:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:59,551 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 249 transitions. [2020-11-22 13:05:59,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 249 transitions. [2020-11-22 13:05:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-22 13:05:59,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:59,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:05:59,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:05:59,772 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:59,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:59,772 INFO L82 PathProgramCache]: Analyzing trace with hash 367437248, now seen corresponding path program 1 times [2020-11-22 13:05:59,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:05:59,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173207141] [2020-11-22 13:05:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 13:05:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:06:00,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:06:00,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:00,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-22 13:06:00,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173207141] [2020-11-22 13:06:00,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:00,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:06:00,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946665933] [2020-11-22 13:06:00,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:00,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:00,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:00,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:00,041 INFO L87 Difference]: Start difference. First operand 184 states and 249 transitions. Second operand 6 states. [2020-11-22 13:06:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:00,123 INFO L93 Difference]: Finished difference Result 420 states and 567 transitions. [2020-11-22 13:06:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:00,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-11-22 13:06:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:00,125 INFO L225 Difference]: With dead ends: 420 [2020-11-22 13:06:00,125 INFO L226 Difference]: Without dead ends: 242 [2020-11-22 13:06:00,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 13:06:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-11-22 13:06:00,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 154. [2020-11-22 13:06:00,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-22 13:06:00,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 204 transitions. [2020-11-22 13:06:00,153 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 204 transitions. Word has length 51 [2020-11-22 13:06:00,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:00,153 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 204 transitions. [2020-11-22 13:06:00,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:00,153 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 204 transitions. [2020-11-22 13:06:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-22 13:06:00,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:00,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2020-11-22 13:06:00,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-22 13:06:00,372 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:00,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:00,372 INFO L82 PathProgramCache]: Analyzing trace with hash -482312060, now seen corresponding path program 1 times [2020-11-22 13:06:00,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:00,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355543411] [2020-11-22 13:06:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 13:06:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:00,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:00,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:06:00,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-22 13:06:00,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355543411] [2020-11-22 13:06:00,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:00,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:06:00,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547967795] [2020-11-22 13:06:00,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:00,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:00,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:00,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:00,665 INFO L87 Difference]: Start difference. First operand 154 states and 204 transitions. Second operand 6 states. [2020-11-22 13:06:00,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:00,946 INFO L93 Difference]: Finished difference Result 756 states and 1034 transitions. [2020-11-22 13:06:00,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-22 13:06:00,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-11-22 13:06:00,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:00,953 INFO L225 Difference]: With dead ends: 756 [2020-11-22 13:06:00,953 INFO L226 Difference]: Without dead ends: 608 [2020-11-22 13:06:00,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:06:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-11-22 13:06:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 300. [2020-11-22 13:06:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-11-22 13:06:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 394 transitions. [2020-11-22 13:06:01,000 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 394 transitions. Word has length 52 [2020-11-22 13:06:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 394 transitions. [2020-11-22 13:06:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 394 transitions. [2020-11-22 13:06:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-22 13:06:01,010 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:01,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:01,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-22 13:06:01,226 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1788245310, now seen corresponding path program 1 times [2020-11-22 13:06:01,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:01,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817604193] [2020-11-22 13:06:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/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 13:06:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:01,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:06:01,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:01,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:01,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817604193] [2020-11-22 13:06:01,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [464704016] [2020-11-22 13:06:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:01,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:06:01,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 13:06:01,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 13:06:01,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:06:01,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2020-11-22 13:06:01,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295836543] [2020-11-22 13:06:01,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:01,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:01,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:01,795 INFO L87 Difference]: Start difference. First operand 300 states and 394 transitions. Second operand 5 states. [2020-11-22 13:06:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:02,107 INFO L93 Difference]: Finished difference Result 800 states and 1059 transitions. [2020-11-22 13:06:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:06:02,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-11-22 13:06:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:02,112 INFO L225 Difference]: With dead ends: 800 [2020-11-22 13:06:02,113 INFO L226 Difference]: Without dead ends: 798 [2020-11-22 13:06:02,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:06:02,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-11-22 13:06:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 300. [2020-11-22 13:06:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-11-22 13:06:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 392 transitions. [2020-11-22 13:06:02,162 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 392 transitions. Word has length 53 [2020-11-22 13:06:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:02,162 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 392 transitions. [2020-11-22 13:06:02,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 392 transitions. [2020-11-22 13:06:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-22 13:06:02,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:02,164 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2020-11-22 13:06:02,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:02,584 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:02,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1533505646, now seen corresponding path program 1 times [2020-11-22 13:06:02,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:02,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784950955] [2020-11-22 13:06:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:02,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:02,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:06:02,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:06:02,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784950955] [2020-11-22 13:06:02,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [327697424] [2020-11-22 13:06:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:03,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:06:03,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:06:03,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683786098] [2020-11-22 13:06:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:03,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:03,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:06:03,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-22 13:06:03,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-22 13:06:03,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2020-11-22 13:06:03,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945820109] [2020-11-22 13:06:03,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:06:03,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:06:03,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:03,417 INFO L87 Difference]: Start difference. First operand 300 states and 392 transitions. Second operand 10 states. [2020-11-22 13:06:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:04,459 INFO L93 Difference]: Finished difference Result 1973 states and 2625 transitions. [2020-11-22 13:06:04,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-22 13:06:04,459 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2020-11-22 13:06:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:04,471 INFO L225 Difference]: With dead ends: 1973 [2020-11-22 13:06:04,471 INFO L226 Difference]: Without dead ends: 1727 [2020-11-22 13:06:04,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 301 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2020-11-22 13:06:04,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2020-11-22 13:06:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 538. [2020-11-22 13:06:04,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-11-22 13:06:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 714 transitions. [2020-11-22 13:06:04,595 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 714 transitions. Word has length 53 [2020-11-22 13:06:04,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:04,597 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 714 transitions. [2020-11-22 13:06:04,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:06:04,597 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 714 transitions. [2020-11-22 13:06:04,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-22 13:06:04,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:04,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:06:05,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt --rewrite-divk,12 mathsat -unsat_core_generation=3 [2020-11-22 13:06:05,222 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1340997472, now seen corresponding path program 2 times [2020-11-22 13:06:05,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:05,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902010247] [2020-11-22 13:06:05,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:06,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-22 13:06:06,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-22 13:06:06,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:07,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:07,812 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:06:07,812 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:08,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-22 13:06:08,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:08 BoogieIcfgContainer [2020-11-22 13:06:08,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:08,226 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:08,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:08,227 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:08,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:56" (3/4) ... [2020-11-22 13:06:08,231 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:06:08,387 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_006cb3ac-9f95-4ced-b773-62a0d9b2333b/bin/utaipan/witness.graphml [2020-11-22 13:06:08,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:08,389 INFO L168 Benchmark]: Toolchain (without parser) took 15765.83 ms. Allocated memory was 50.3 MB in the beginning and 146.8 MB in the end (delta: 96.5 MB). Free memory was 27.4 MB in the beginning and 56.1 MB in the end (delta: -28.7 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:08,389 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:08,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.75 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.2 MB in the beginning and 38.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:08,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.90 ms. Allocated memory is still 69.2 MB. Free memory was 38.2 MB in the beginning and 34.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:08,390 INFO L168 Benchmark]: Boogie Preprocessor took 82.06 ms. Allocated memory is still 69.2 MB. Free memory was 34.4 MB in the beginning and 50.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:08,391 INFO L168 Benchmark]: RCFGBuilder took 2473.15 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 43.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:08,391 INFO L168 Benchmark]: TraceAbstraction took 12216.47 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 43.4 MB in the beginning and 84.4 MB in the end (delta: -41.0 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:08,392 INFO L168 Benchmark]: Witness Printer took 160.71 ms. Allocated memory is still 146.8 MB. Free memory was 84.4 MB in the beginning and 56.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:08,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 32.9 MB in the beginning and 32.8 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.75 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.2 MB in the beginning and 38.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.90 ms. Allocated memory is still 69.2 MB. Free memory was 38.2 MB in the beginning and 34.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.06 ms. Allocated memory is still 69.2 MB. Free memory was 34.4 MB in the beginning and 50.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2473.15 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 43.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12216.47 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 43.4 MB in the beginning and 84.4 MB in the end (delta: -41.0 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.1 GB. * Witness Printer took 160.71 ms. Allocated memory is still 146.8 MB. Free memory was 84.4 MB in the beginning and 56.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 29.4 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: [L119] int pumpRunning = 0; [L120] int systemActive = 1; [L493] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L717] int cleanupTimeShifts = 4; [L816] int waterLevel = 1; [L817] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L793] int retValue_acc ; [L794] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L936] int retValue_acc ; [L939] retValue_acc = 1 [L940] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] COND TRUE waterLevel < 2 [L835] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L185] COND FALSE !(\read(pumpRunning)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L159] COND TRUE ! pumpRunning [L296] int retValue_acc ; [L297] int tmp ; [L298] int tmp___0 ; [L896] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] COND FALSE !(waterLevel < 2) [L903] retValue_acc = 0 [L904] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L302] tmp = isHighWaterSensorDry() [L304] COND FALSE !(\read(tmp)) [L307] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L309] retValue_acc = tmp___0 [L310] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L161] tmp = isHighWaterLevel() [L163] COND TRUE \read(tmp) [L215] int tmp ; [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L219] tmp = isMethaneAlarm() [L221] COND FALSE !(\read(tmp)) [L210] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L697] tmp = getWaterLevel() [L699] COND TRUE tmp == 0 [L251] int retValue_acc ; [L254] retValue_acc = pumpRunning [L255] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L701] tmp___0 = isPumpRunning() [L703] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product45.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1165 SDtfs, 2607 SDslu, 2796 SDs, 0 SdLazy, 488 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1076 GetRequests, 996 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=538occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 2481 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 600 NumberOfCodeBlocks, 600 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 140279 SizeOfPredicates, 32 NumberOfNonLiveVariables, 2901 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 26 InterpolantComputations, 18 PerfectInterpolantSequences, 192/256 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...