./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.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_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 944b52f1c750b2b149a29532cc6e317483d681a8 ............................................................................................................................................ 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_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 944b52f1c750b2b149a29532cc6e317483d681a8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:06:01,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:01,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:01,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:01,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:01,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:01,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:01,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:01,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:01,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:01,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:01,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:01,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:01,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:01,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:01,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:01,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:01,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:01,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:01,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:01,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:01,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:01,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:01,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:01,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:01,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:01,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:01,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:01,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:01,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:01,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:01,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:01,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:01,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:01,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:01,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:01,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:01,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:01,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:01,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:01,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:01,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:02,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:02,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:02,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:02,046 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:02,046 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:02,047 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:02,047 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:02,047 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:02,047 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:02,047 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:02,049 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:02,049 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:02,049 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:02,049 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:02,050 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:02,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:02,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:02,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:02,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:02,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:02,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:02,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:02,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:02,052 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:02,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:02,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:02,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:02,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:02,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:02,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:02,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:02,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:02,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:02,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:02,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:02,057 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:02,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:02,057 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:02,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:02,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:02,058 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_018b97db-39fd-4caa-adc1-7d9ab021e292/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2020-11-22 13:06:02,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:02,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:02,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:02,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:02,343 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:02,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-11-22 13:06:02,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/32ba7bca2/217da96a20dd4149af8320da6db182c5/FLAGdcb5cc5ed [2020-11-22 13:06:03,075 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:03,076 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-11-22 13:06:03,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/32ba7bca2/217da96a20dd4149af8320da6db182c5/FLAGdcb5cc5ed [2020-11-22 13:06:03,361 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/32ba7bca2/217da96a20dd4149af8320da6db182c5 [2020-11-22 13:06:03,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:03,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:03,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:03,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:03,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:03,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:03" (1/1) ... [2020-11-22 13:06:03,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e0041a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:03, skipping insertion in model container [2020-11-22 13:06:03,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:03" (1/1) ... [2020-11-22 13:06:03,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:03,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:03,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:03,779 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 13:06:03,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a9e6fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:03, skipping insertion in model container [2020-11-22 13:06:03,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:03,780 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:06:03,782 INFO L168 Benchmark]: Toolchain (without parser) took 416.75 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 67.4 MB in the end (delta: -5.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:03,783 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:03,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.99 ms. Allocated memory is still 92.3 MB. Free memory was 61.4 MB in the beginning and 67.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:03,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory was 53.4 MB in the beginning and 53.4 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.99 ms. Allocated memory is still 92.3 MB. Free memory was 61.4 MB in the beginning and 67.4 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 108]: 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 13:06:05,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:05,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:06,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:06,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:06,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:06,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:06,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:06,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:06,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:06,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:06,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:06,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:06,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:06,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:06,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:06,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:06,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:06,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:06,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:06,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:06,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:06,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:06,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:06,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:06,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:06,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:06,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:06,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:06,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:06,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:06,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:06,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:06,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:06,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:06,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:06,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:06,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:06,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:06,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:06,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:06,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:06:06,098 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:06,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:06,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:06,101 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:06,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:06,102 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:06,102 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:06,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:06,102 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:06,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:06,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:06,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:06,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:06,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:06,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:06,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:06,106 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:06,106 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:06:06,106 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:06:06,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:06,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:06,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:06,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:06,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:06,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:06:06,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:06,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:06,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:06,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:06,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:06,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:06,109 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:06:06,110 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:06:06,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:06,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:06,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:06,111 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_018b97db-39fd-4caa-adc1-7d9ab021e292/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 944b52f1c750b2b149a29532cc6e317483d681a8 [2020-11-22 13:06:06,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:06,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:06,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:06,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:06,554 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:06,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-11-22 13:06:06,628 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/f3d7f2193/30f2f42fffca46dba98cc9757e204814/FLAG92420e5a8 [2020-11-22 13:06:07,163 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:07,163 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2020-11-22 13:06:07,179 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/f3d7f2193/30f2f42fffca46dba98cc9757e204814/FLAG92420e5a8 [2020-11-22 13:06:07,497 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/data/f3d7f2193/30f2f42fffca46dba98cc9757e204814 [2020-11-22 13:06:07,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:07,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:07,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:07,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:07,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:07,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:07" (1/1) ... [2020-11-22 13:06:07,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299fb56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:07, skipping insertion in model container [2020-11-22 13:06:07,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:07" (1/1) ... [2020-11-22 13:06:07,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:07,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:07,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:07,892 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:06:07,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:07,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:07,975 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:08,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:08,122 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:08,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08 WrapperNode [2020-11-22 13:06:08,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:08,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:08,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:08,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:08,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:08,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:08,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:08,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:08,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... [2020-11-22 13:06:08,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:08,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:08,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:08,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:08,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:06:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:10,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:10,630 INFO L298 CfgBuilder]: Removed 166 assume(true) statements. [2020-11-22 13:06:10,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:10 BoogieIcfgContainer [2020-11-22 13:06:10,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:10,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:10,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:10,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:10,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:07" (1/3) ... [2020-11-22 13:06:10,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fc66db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:10, skipping insertion in model container [2020-11-22 13:06:10,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:08" (2/3) ... [2020-11-22 13:06:10,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fc66db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:10, skipping insertion in model container [2020-11-22 13:06:10,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:10" (3/3) ... [2020-11-22 13:06:10,648 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2020-11-22 13:06:10,659 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:10,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:06:10,676 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:06:10,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:10,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:10,715 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:10,715 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:10,715 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:10,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:10,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:10,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-22 13:06:10,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:06:10,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:10,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:10,746 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1368208383, now seen corresponding path program 1 times [2020-11-22 13:06:10,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:10,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813867970] [2020-11-22 13:06:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:11,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:06:11,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:11,048 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 13:06:11,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:11,058 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 13:06:11,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813867970] [2020-11-22 13:06:11,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:11,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:06:11,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527778717] [2020-11-22 13:06:11,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:11,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:11,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:11,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:11,089 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 2 states. [2020-11-22 13:06:11,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:11,118 INFO L93 Difference]: Finished difference Result 223 states and 338 transitions. [2020-11-22 13:06:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:11,120 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-22 13:06:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:11,130 INFO L225 Difference]: With dead ends: 223 [2020-11-22 13:06:11,131 INFO L226 Difference]: Without dead ends: 109 [2020-11-22 13:06:11,134 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 13:06:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-22 13:06:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-22 13:06:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-22 13:06:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-11-22 13:06:11,178 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-11-22 13:06:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:11,178 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-11-22 13:06:11,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:11,179 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-11-22 13:06:11,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:06:11,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:11,180 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 13:06:11,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:06:11,398 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:11,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:11,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1880002016, now seen corresponding path program 1 times [2020-11-22 13:06:11,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:11,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071132524] [2020-11-22 13:06:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:11,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:06:11,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:11,608 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 13:06:11,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:11,633 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 13:06:11,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071132524] [2020-11-22 13:06:11,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:11,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:06:11,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139352782] [2020-11-22 13:06:11,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:11,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:11,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:11,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:11,636 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 4 states. [2020-11-22 13:06:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:11,654 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-11-22 13:06:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:11,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 13:06:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:11,656 INFO L225 Difference]: With dead ends: 109 [2020-11-22 13:06:11,656 INFO L226 Difference]: Without dead ends: 47 [2020-11-22 13:06:11,657 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 13:06:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-22 13:06:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-22 13:06:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-22 13:06:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-11-22 13:06:11,664 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-11-22 13:06:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:11,664 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-11-22 13:06:11,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-11-22 13:06:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-22 13:06:11,666 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:11,666 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 13:06:11,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:06:11,867 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:11,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2020-11-22 13:06:11,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:11,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111587994] [2020-11-22 13:06:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:12,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:06:12,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:12,176 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 13:06:12,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:12,189 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 13:06:12,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111587994] [2020-11-22 13:06:12,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:12,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 13:06:12,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708218999] [2020-11-22 13:06:12,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:12,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:12,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:12,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:12,192 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 4 states. [2020-11-22 13:06:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:12,230 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2020-11-22 13:06:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:12,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-22 13:06:12,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:12,233 INFO L225 Difference]: With dead ends: 152 [2020-11-22 13:06:12,233 INFO L226 Difference]: Without dead ends: 111 [2020-11-22 13:06:12,234 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 13:06:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-22 13:06:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2020-11-22 13:06:12,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-22 13:06:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2020-11-22 13:06:12,257 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2020-11-22 13:06:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:12,257 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2020-11-22 13:06:12,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2020-11-22 13:06:12,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 13:06:12,259 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:12,259 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 13:06:12,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:06:12,472 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:12,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:12,473 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2020-11-22 13:06:12,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:12,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081958254] [2020-11-22 13:06:12,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:12,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:06:12,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:12,673 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 13:06:12,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:12,676 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 13:06:12,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081958254] [2020-11-22 13:06:12,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:12,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:06:12,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116794063] [2020-11-22 13:06:12,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:12,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:12,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:12,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:12,679 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2020-11-22 13:06:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:12,750 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2020-11-22 13:06:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:12,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-22 13:06:12,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:12,752 INFO L225 Difference]: With dead ends: 147 [2020-11-22 13:06:12,752 INFO L226 Difference]: Without dead ends: 87 [2020-11-22 13:06:12,752 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 13:06:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-22 13:06:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-11-22 13:06:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-22 13:06:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2020-11-22 13:06:12,765 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2020-11-22 13:06:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:12,766 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2020-11-22 13:06:12,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2020-11-22 13:06:12,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-22 13:06:12,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:12,767 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] [2020-11-22 13:06:12,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:06:12,984 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2020-11-22 13:06:12,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:12,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622694661] [2020-11-22 13:06:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:13,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:06:13,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:13,207 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 13:06:13,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:13,254 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 13:06:13,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622694661] [2020-11-22 13:06:13,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:13,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 13:06:13,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616518005] [2020-11-22 13:06:13,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:06:13,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:13,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:06:13,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:13,256 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 8 states. [2020-11-22 13:06:13,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:13,686 INFO L93 Difference]: Finished difference Result 608 states and 892 transitions. [2020-11-22 13:06:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-22 13:06:13,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-22 13:06:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:13,692 INFO L225 Difference]: With dead ends: 608 [2020-11-22 13:06:13,692 INFO L226 Difference]: Without dead ends: 529 [2020-11-22 13:06:13,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 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 13:06:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-11-22 13:06:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 212. [2020-11-22 13:06:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-22 13:06:13,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2020-11-22 13:06:13,747 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 25 [2020-11-22 13:06:13,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:13,748 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2020-11-22 13:06:13,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:06:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2020-11-22 13:06:13,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-22 13:06:13,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:13,756 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-11-22 13:06:13,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:06:13,977 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:13,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:13,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1245892280, now seen corresponding path program 1 times [2020-11-22 13:06:13,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:13,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541824919] [2020-11-22 13:06:13,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:14,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:06:14,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:14,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:14,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541824919] [2020-11-22 13:06:14,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1450893703] [2020-11-22 13:06:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:14,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:06:14,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-22 13:06:14,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-22 13:06:14,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:06:14,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2020-11-22 13:06:14,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969392184] [2020-11-22 13:06:14,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:14,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:14,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:14,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:14,520 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand 5 states. [2020-11-22 13:06:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:14,770 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2020-11-22 13:06:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:06:14,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-11-22 13:06:14,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:14,774 INFO L225 Difference]: With dead ends: 498 [2020-11-22 13:06:14,774 INFO L226 Difference]: Without dead ends: 496 [2020-11-22 13:06:14,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 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 13:06:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-11-22 13:06:14,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2020-11-22 13:06:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-11-22 13:06:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2020-11-22 13:06:14,818 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 40 [2020-11-22 13:06:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:14,818 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2020-11-22 13:06:14,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2020-11-22 13:06:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-22 13:06:14,820 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:14,820 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] [2020-11-22 13:06:15,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:15,233 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:15,234 INFO L82 PathProgramCache]: Analyzing trace with hash -349171982, now seen corresponding path program 1 times [2020-11-22 13:06:15,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:15,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912553323] [2020-11-22 13:06:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:15,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:06:15,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:15,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:15,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912553323] [2020-11-22 13:06:15,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1234063820] [2020-11-22 13:06:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:15,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:06:15,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:15,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:15,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:06:15,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3, 3] total 7 [2020-11-22 13:06:15,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396750585] [2020-11-22 13:06:15,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:15,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:15,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:15,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:15,759 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand 3 states. [2020-11-22 13:06:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:17,214 INFO L93 Difference]: Finished difference Result 424 states and 588 transitions. [2020-11-22 13:06:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:17,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-11-22 13:06:17,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:17,216 INFO L225 Difference]: With dead ends: 424 [2020-11-22 13:06:17,217 INFO L226 Difference]: Without dead ends: 154 [2020-11-22 13:06:17,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-22 13:06:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2020-11-22 13:06:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-11-22 13:06:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2020-11-22 13:06:17,254 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 48 [2020-11-22 13:06:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:17,254 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2020-11-22 13:06:17,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:17,254 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2020-11-22 13:06:17,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-22 13:06:17,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:17,255 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] [2020-11-22 13:06:17,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:17,670 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:17,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash 728455000, now seen corresponding path program 1 times [2020-11-22 13:06:17,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:17,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396370566] [2020-11-22 13:06:17,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:17,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:06:17,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:17,899 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 13:06:17,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:17,908 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 13:06:17,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396370566] [2020-11-22 13:06:17,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:17,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-22 13:06:17,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567239434] [2020-11-22 13:06:17,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:17,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:17,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:17,910 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand 5 states. [2020-11-22 13:06:18,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:18,033 INFO L93 Difference]: Finished difference Result 421 states and 560 transitions. [2020-11-22 13:06:18,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:06:18,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-11-22 13:06:18,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:18,036 INFO L225 Difference]: With dead ends: 421 [2020-11-22 13:06:18,036 INFO L226 Difference]: Without dead ends: 273 [2020-11-22 13:06:18,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 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 13:06:18,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-11-22 13:06:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 169. [2020-11-22 13:06:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-11-22 13:06:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2020-11-22 13:06:18,059 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 49 [2020-11-22 13:06:18,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:18,059 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2020-11-22 13:06:18,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2020-11-22 13:06:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-22 13:06:18,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:18,061 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] [2020-11-22 13:06:18,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-22 13:06:18,261 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:18,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2114658394, now seen corresponding path program 1 times [2020-11-22 13:06:18,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:18,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563402413] [2020-11-22 13:06:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/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 13:06:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:18,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-22 13:06:18,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:18,483 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 13:06:18,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:18,507 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 13:06:18,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563402413] [2020-11-22 13:06:18,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:18,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:06:18,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868783275] [2020-11-22 13:06:18,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:18,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:18,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:18,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:18,510 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand 6 states. [2020-11-22 13:06:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:18,600 INFO L93 Difference]: Finished difference Result 397 states and 519 transitions. [2020-11-22 13:06:18,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:18,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-22 13:06:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:18,602 INFO L225 Difference]: With dead ends: 397 [2020-11-22 13:06:18,602 INFO L226 Difference]: Without dead ends: 234 [2020-11-22 13:06:18,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 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 13:06:18,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-11-22 13:06:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 148. [2020-11-22 13:06:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-11-22 13:06:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2020-11-22 13:06:18,624 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 49 [2020-11-22 13:06:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:18,625 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2020-11-22 13:06:18,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:18,625 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2020-11-22 13:06:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-22 13:06:18,626 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:18,626 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] [2020-11-22 13:06:18,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-22 13:06:18,839 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:18,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:18,839 INFO L82 PathProgramCache]: Analyzing trace with hash 451206174, now seen corresponding path program 1 times [2020-11-22 13:06:18,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:18,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449190609] [2020-11-22 13:06:18,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:19,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:19,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 13:06:19,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:19,243 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 13:06:19,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449190609] [2020-11-22 13:06:19,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [17023813] [2020-11-22 13:06:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-22 13:06:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:19,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:19,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:19,490 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 13:06:19,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:19,509 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 13:06:19,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972578969] [2020-11-22 13:06:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:19,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:19,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:19,706 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 13:06:19,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:19,716 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 13:06:19,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-22 13:06:19,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5, 5] total 10 [2020-11-22 13:06:19,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872458288] [2020-11-22 13:06:19,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 13:06:19,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 13:06:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-11-22 13:06:19,719 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand 11 states. [2020-11-22 13:06:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:20,892 INFO L93 Difference]: Finished difference Result 959 states and 1265 transitions. [2020-11-22 13:06:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-22 13:06:20,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-11-22 13:06:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:20,897 INFO L225 Difference]: With dead ends: 959 [2020-11-22 13:06:20,897 INFO L226 Difference]: Without dead ends: 841 [2020-11-22 13:06:20,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 280 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2020-11-22 13:06:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-11-22 13:06:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 264. [2020-11-22 13:06:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-11-22 13:06:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2020-11-22 13:06:20,937 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 50 [2020-11-22 13:06:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:20,938 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2020-11-22 13:06:20,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 13:06:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2020-11-22 13:06:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-22 13:06:20,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:20,939 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] [2020-11-22 13:06:21,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:21,554 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:21,554 INFO L82 PathProgramCache]: Analyzing trace with hash -992737800, now seen corresponding path program 2 times [2020-11-22 13:06:21,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:21,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405160634] [2020-11-22 13:06:21,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:22,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-22 13:06:22,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-22 13:06:22,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:24,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:24,281 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:06:24,281 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:24,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-22 13:06:24,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:24 BoogieIcfgContainer [2020-11-22 13:06:24,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:24,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:24,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:24,716 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:24,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:10" (3/4) ... [2020-11-22 13:06:24,718 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:06:24,892 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_018b97db-39fd-4caa-adc1-7d9ab021e292/bin/utaipan/witness.graphml [2020-11-22 13:06:24,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:24,894 INFO L168 Benchmark]: Toolchain (without parser) took 17390.69 ms. Allocated memory was 56.6 MB in the beginning and 104.9 MB in the end (delta: 48.2 MB). Free memory was 36.0 MB in the beginning and 57.5 MB in the end (delta: -21.5 MB). Peak memory consumption was 61.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:24,895 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:24,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.26 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.9 MB in the beginning and 51.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:24,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.55 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 48.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:24,896 INFO L168 Benchmark]: Boogie Preprocessor took 51.13 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 45.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:24,897 INFO L168 Benchmark]: RCFGBuilder took 2355.74 ms. Allocated memory is still 71.3 MB. Free memory was 45.2 MB in the beginning and 26.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:24,897 INFO L168 Benchmark]: TraceAbstraction took 14073.63 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 51.0 MB in the beginning and 27.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:24,897 INFO L168 Benchmark]: Witness Printer took 176.99 ms. Allocated memory is still 104.9 MB. Free memory was 27.9 MB in the beginning and 57.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:24,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 33.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 617.26 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.9 MB in the beginning and 51.8 MB in the end (delta: -15.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.55 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 48.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.13 ms. Allocated memory is still 71.3 MB. Free memory was 48.2 MB in the beginning and 45.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2355.74 ms. Allocated memory is still 71.3 MB. Free memory was 45.2 MB in the beginning and 26.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14073.63 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 51.0 MB in the beginning and 27.9 MB in the end (delta: 23.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 16.1 GB. * Witness Printer took 176.99 ms. Allocated memory is still 104.9 MB. Free memory was 27.9 MB in the beginning and 57.5 MB in the end (delta: -29.7 MB). Peak memory consumption was 4.9 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: [L249] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L526] int pumpRunning = 0; [L527] int systemActive = 1; [L730] int waterLevel = 1; [L731] int methaneLevelCritical = 0; [L824] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L897] int retValue_acc ; [L898] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L904] tmp = valid_product() [L906] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] int splverifierCounter ; [L453] int tmp ; [L454] int tmp___0 ; [L455] int tmp___1 ; [L456] int tmp___2 ; [L459] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L748] COND TRUE waterLevel < 2 [L749] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L534] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L592] COND FALSE !(\read(pumpRunning)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] COND TRUE ! pumpRunning [L686] int retValue_acc ; [L687] int tmp ; [L688] int tmp___0 ; [L810] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L813] COND FALSE !(waterLevel < 2) [L817] retValue_acc = 0 [L818] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L692] tmp = isHighWaterSensorDry() [L694] COND FALSE !(\read(tmp)) [L697] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L699] retValue_acc = tmp___0 [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp = isHighWaterLevel() [L570] COND TRUE \read(tmp) [L617] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp = getWaterLevel() [L928] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L463] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L469] tmp = __VERIFIER_nondet_int() [L471] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L479] tmp___0 = __VERIFIER_nondet_int() [L481] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L489] tmp___2 = __VERIFIER_nondet_int() [L491] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L534] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L736] COND TRUE waterLevel > 0 [L737] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L541] COND TRUE \read(systemActive) [L589] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] COND TRUE \read(pumpRunning) [L630] int retValue_acc ; [L769] int retValue_acc ; [L772] retValue_acc = methaneLevelCritical [L773] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L634] retValue_acc = isMethaneLevelCritical() [L636] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] tmp = isMethaneAlarm() [L596] COND FALSE !(\read(tmp)) [L563] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L566] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L921] int tmp ; [L922] int tmp___0 ; [L801] int retValue_acc ; [L804] retValue_acc = waterLevel [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L926] tmp = getWaterLevel() [L928] COND TRUE tmp == 0 [L641] int retValue_acc ; [L644] retValue_acc = pumpRunning [L645] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L930] tmp___0 = isPumpRunning() [L932] 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_product39.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, 116 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1025 SDtfs, 2246 SDslu, 2298 SDs, 0 SdLazy, 448 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1068 GetRequests, 990 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 1415 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1028 ConstructedInterpolants, 1 QuantifiedInterpolants, 125004 SizeOfPredicates, 27 NumberOfNonLiveVariables, 3044 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 28 InterpolantComputations, 18 PerfectInterpolantSequences, 178/252 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...