./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c228d9f74ddd17cda7010ca670107d7221f92470 ...................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c228d9f74ddd17cda7010ca670107d7221f92470 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-f470102 [2019-12-07 21:19:04,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:19:04,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:19:04,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:19:04,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:19:04,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:19:04,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:19:04,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:19:04,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:19:04,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:19:04,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:19:04,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:19:04,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:19:04,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:19:04,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:19:04,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:19:04,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:19:04,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:19:04,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:19:04,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:19:04,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:19:04,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:19:04,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:19:04,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:19:04,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:19:04,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:19:04,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:19:04,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:19:04,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:19:04,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:19:04,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:19:04,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:19:04,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:19:04,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:19:04,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:19:04,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:19:04,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:19:04,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:19:04,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:19:04,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:19:04,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:19:04,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:19:04,664 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:19:04,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:19:04,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:19:04,665 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:19:04,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:19:04,665 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:19:04,665 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:19:04,666 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:19:04,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:19:04,666 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:19:04,666 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:19:04,666 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:19:04,666 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:19:04,666 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:19:04,666 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:19:04,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:19:04,667 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:19:04,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:19:04,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:19:04,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:19:04,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:19:04,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:19:04,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:19:04,668 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:19:04,668 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:19:04,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:19:04,668 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:19:04,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:19:04,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:19:04,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:19:04,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:19:04,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:19:04,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:19:04,670 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_78264043-571e-451e-92cf-cf8a8794c9e9/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(__VERIFIER_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 -> c228d9f74ddd17cda7010ca670107d7221f92470 [2019-12-07 21:19:04,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:19:04,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:19:04,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:19:04,784 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:19:04,784 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:19:04,784 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-12-07 21:19:04,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/5e8e0d19a/697cc391564e456992e29735f4d0f5fa/FLAG69f372b57 [2019-12-07 21:19:05,319 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:19:05,320 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-12-07 21:19:05,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/5e8e0d19a/697cc391564e456992e29735f4d0f5fa/FLAG69f372b57 [2019-12-07 21:19:05,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/5e8e0d19a/697cc391564e456992e29735f4d0f5fa [2019-12-07 21:19:05,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:19:05,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:19:05,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:19:05,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:19:05,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:19:05,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:19:05" (1/1) ... [2019-12-07 21:19:05,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2b2671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:05, skipping insertion in model container [2019-12-07 21:19:05,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:19:05" (1/1) ... [2019-12-07 21:19:05,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:19:05,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:19:05,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:19:05,608 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) [2019-12-07 21:19:05,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f624c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:05, skipping insertion in model container [2019-12-07 21:19:05,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:19:05,609 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 21:19:05,611 INFO L168 Benchmark]: Toolchain (without parser) took 265.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:05,612 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:19:05,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:05,613 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 937.3 MB in the beginning and 1.1 GB in the end (delta: -155.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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 0.1.25-f470102 [2019-12-07 21:19:06,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:19:06,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:19:06,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:19:06,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:19:06,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:19:06,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:19:06,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:19:06,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:19:06,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:19:06,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:19:06,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:19:06,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:19:06,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:19:06,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:19:06,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:19:06,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:19:06,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:19:06,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:19:06,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:19:06,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:19:06,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:19:06,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:19:06,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:19:06,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:19:06,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:19:06,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:19:06,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:19:06,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:19:06,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:19:06,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:19:06,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:19:06,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:19:06,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:19:06,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:19:06,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:19:06,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:19:06,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:19:06,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:19:06,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:19:06,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:19:06,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 21:19:06,797 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:19:06,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:19:06,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:19:06,798 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:19:06,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:19:06,798 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:19:06,798 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:19:06,798 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:19:06,798 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:19:06,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:19:06,799 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:19:06,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:19:06,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:19:06,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:19:06,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:19:06,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:19:06,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:19:06,800 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 21:19:06,800 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 21:19:06,800 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:19:06,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:19:06,800 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:19:06,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:19:06,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:19:06,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 21:19:06,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:19:06,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:19:06,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:19:06,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:19:06,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:19:06,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:19:06,802 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 21:19:06,802 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 21:19:06,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:19:06,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:19:06,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:19:06,802 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_78264043-571e-451e-92cf-cf8a8794c9e9/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(__VERIFIER_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 -> c228d9f74ddd17cda7010ca670107d7221f92470 [2019-12-07 21:19:06,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:19:06,985 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:19:06,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:19:06,990 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:19:06,990 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:19:06,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-12-07 21:19:07,033 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/e2145969d/a11bf120a9c74d808df9f6c795b821ed/FLAG3d4425b53 [2019-12-07 21:19:07,381 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:19:07,381 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-12-07 21:19:07,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/e2145969d/a11bf120a9c74d808df9f6c795b821ed/FLAG3d4425b53 [2019-12-07 21:19:07,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/data/e2145969d/a11bf120a9c74d808df9f6c795b821ed [2019-12-07 21:19:07,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:19:07,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:19:07,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:19:07,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:19:07,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:19:07,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b70e7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07, skipping insertion in model container [2019-12-07 21:19:07,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:19:07,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:19:07,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:19:07,660 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 21:19:07,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:19:07,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:19:07,710 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:19:07,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:19:07,772 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:19:07,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07 WrapperNode [2019-12-07 21:19:07,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:19:07,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:19:07,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:19:07,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:19:07,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:19:07,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:19:07,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:19:07,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:19:07,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... [2019-12-07 21:19:07,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:19:07,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:19:07,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:19:07,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:19:07,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:19:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-12-07 21:19:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:19:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:19:08,394 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:19:08,394 INFO L287 CfgBuilder]: Removed 160 assume(true) statements. [2019-12-07 21:19:08,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:19:08 BoogieIcfgContainer [2019-12-07 21:19:08,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:19:08,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:19:08,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:19:08,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:19:08,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:19:07" (1/3) ... [2019-12-07 21:19:08,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2690cfe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:19:08, skipping insertion in model container [2019-12-07 21:19:08,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:19:07" (2/3) ... [2019-12-07 21:19:08,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2690cfe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:19:08, skipping insertion in model container [2019-12-07 21:19:08,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:19:08" (3/3) ... [2019-12-07 21:19:08,401 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2019-12-07 21:19:08,408 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:19:08,413 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 21:19:08,421 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 21:19:08,437 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:19:08,437 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:19:08,438 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:19:08,438 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:19:08,438 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:19:08,438 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:19:08,438 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:19:08,438 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:19:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-12-07 21:19:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 21:19:08,455 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:08,455 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:19:08,456 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:08,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1221872895, now seen corresponding path program 1 times [2019-12-07 21:19:08,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:08,468 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171380844] [2019-12-07 21:19:08,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:08,606 INFO L264 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 21:19:08,610 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:08,620 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:08,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171380844] [2019-12-07 21:19:08,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:08,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 21:19:08,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760795907] [2019-12-07 21:19:08,628 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 21:19:08,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 21:19:08,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 21:19:08,638 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2019-12-07 21:19:08,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:08,660 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2019-12-07 21:19:08,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 21:19:08,661 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-12-07 21:19:08,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:08,670 INFO L225 Difference]: With dead ends: 220 [2019-12-07 21:19:08,670 INFO L226 Difference]: Without dead ends: 109 [2019-12-07 21:19:08,672 INFO L630 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 [2019-12-07 21:19:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-12-07 21:19:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-12-07 21:19:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-12-07 21:19:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2019-12-07 21:19:08,703 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2019-12-07 21:19:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:08,703 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2019-12-07 21:19:08,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 21:19:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2019-12-07 21:19:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 21:19:08,704 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:08,704 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 21:19:08,905 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 21:19:08,906 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:08,907 INFO L82 PathProgramCache]: Analyzing trace with hash 175115998, now seen corresponding path program 1 times [2019-12-07 21:19:08,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:08,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535984397] [2019-12-07 21:19:08,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:09,155 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:19:09,157 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:09,170 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:09,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535984397] [2019-12-07 21:19:09,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:09,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 21:19:09,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160047015] [2019-12-07 21:19:09,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:19:09,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:09,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:19:09,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:19:09,181 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 4 states. [2019-12-07 21:19:09,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:09,193 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2019-12-07 21:19:09,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:19:09,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-12-07 21:19:09,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:09,194 INFO L225 Difference]: With dead ends: 109 [2019-12-07 21:19:09,194 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 21:19:09,195 INFO L630 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 [2019-12-07 21:19:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 21:19:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-12-07 21:19:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 21:19:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2019-12-07 21:19:09,200 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2019-12-07 21:19:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:09,200 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2019-12-07 21:19:09,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:19:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2019-12-07 21:19:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 21:19:09,201 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:09,201 INFO L410 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] [2019-12-07 21:19:09,401 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 21:19:09,402 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:09,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1744081540, now seen corresponding path program 1 times [2019-12-07 21:19:09,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:09,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627645788] [2019-12-07 21:19:09,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:09,522 INFO L264 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:19:09,523 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:09,530 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:09,537 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627645788] [2019-12-07 21:19:09,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:09,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-12-07 21:19:09,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144540000] [2019-12-07 21:19:09,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:19:09,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:09,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:19:09,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:19:09,539 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 4 states. [2019-12-07 21:19:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:09,560 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2019-12-07 21:19:09,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:19:09,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-12-07 21:19:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:09,562 INFO L225 Difference]: With dead ends: 152 [2019-12-07 21:19:09,562 INFO L226 Difference]: Without dead ends: 111 [2019-12-07 21:19:09,562 INFO L630 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 [2019-12-07 21:19:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-12-07 21:19:09,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2019-12-07 21:19:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 21:19:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2019-12-07 21:19:09,571 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2019-12-07 21:19:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:09,571 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2019-12-07 21:19:09,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:19:09,571 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2019-12-07 21:19:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 21:19:09,572 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:09,572 INFO L410 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] [2019-12-07 21:19:09,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 21:19:09,773 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:09,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:09,773 INFO L82 PathProgramCache]: Analyzing trace with hash -595366227, now seen corresponding path program 1 times [2019-12-07 21:19:09,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:09,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132757833] [2019-12-07 21:19:09,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:09,875 INFO L264 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:19:09,877 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:09,883 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:09,886 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132757833] [2019-12-07 21:19:09,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:09,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 21:19:09,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148581243] [2019-12-07 21:19:09,887 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:19:09,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:09,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:19:09,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:19:09,888 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2019-12-07 21:19:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:09,965 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2019-12-07 21:19:09,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:19:09,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-12-07 21:19:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:09,967 INFO L225 Difference]: With dead ends: 147 [2019-12-07 21:19:09,967 INFO L226 Difference]: Without dead ends: 87 [2019-12-07 21:19:09,968 INFO L630 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 [2019-12-07 21:19:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-12-07 21:19:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2019-12-07 21:19:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-12-07 21:19:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2019-12-07 21:19:09,978 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2019-12-07 21:19:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:09,978 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2019-12-07 21:19:09,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:19:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2019-12-07 21:19:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 21:19:09,979 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:09,979 INFO L410 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] [2019-12-07 21:19:10,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 21:19:10,181 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:10,182 INFO L82 PathProgramCache]: Analyzing trace with hash 566175321, now seen corresponding path program 1 times [2019-12-07 21:19:10,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:10,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898523920] [2019-12-07 21:19:10,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:10,421 INFO L264 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 21:19:10,423 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:10,437 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:10,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898523920] [2019-12-07 21:19:10,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:10,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-12-07 21:19:10,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211294150] [2019-12-07 21:19:10,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 21:19:10,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 21:19:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 21:19:10,463 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 8 states. [2019-12-07 21:19:10,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:10,714 INFO L93 Difference]: Finished difference Result 608 states and 892 transitions. [2019-12-07 21:19:10,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 21:19:10,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-12-07 21:19:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:10,719 INFO L225 Difference]: With dead ends: 608 [2019-12-07 21:19:10,719 INFO L226 Difference]: Without dead ends: 529 [2019-12-07 21:19:10,720 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-12-07 21:19:10,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2019-12-07 21:19:10,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 212. [2019-12-07 21:19:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-12-07 21:19:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2019-12-07 21:19:10,754 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 25 [2019-12-07 21:19:10,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:10,755 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2019-12-07 21:19:10,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 21:19:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2019-12-07 21:19:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 21:19:10,757 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:10,757 INFO L410 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] [2019-12-07 21:19:10,958 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 21:19:10,958 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:10,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1054930310, now seen corresponding path program 1 times [2019-12-07 21:19:10,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:10,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341429083] [2019-12-07 21:19:10,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:11,179 INFO L264 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:19:11,182 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:11,193 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:11,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341429083] [2019-12-07 21:19:11,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1122707901] [2019-12-07 21:19:11,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:11,304 INFO L264 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 21:19:11,305 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 21:19:11,328 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:11,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-12-07 21:19:11,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:19:11,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [3, 3] total 9 [2019-12-07 21:19:11,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394511946] [2019-12-07 21:19:11,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:19:11,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:11,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:19:11,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 21:19:11,332 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand 5 states. [2019-12-07 21:19:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:11,479 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2019-12-07 21:19:11,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 21:19:11,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2019-12-07 21:19:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:11,483 INFO L225 Difference]: With dead ends: 498 [2019-12-07 21:19:11,483 INFO L226 Difference]: Without dead ends: 496 [2019-12-07 21:19:11,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-12-07 21:19:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-12-07 21:19:11,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2019-12-07 21:19:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-12-07 21:19:11,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2019-12-07 21:19:11,507 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 40 [2019-12-07 21:19:11,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:11,508 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2019-12-07 21:19:11,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:19:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2019-12-07 21:19:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-12-07 21:19:11,510 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:11,510 INFO L410 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] [2019-12-07 21:19:11,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 21:19:11,913 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:11,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:11,914 INFO L82 PathProgramCache]: Analyzing trace with hash -411211596, now seen corresponding path program 1 times [2019-12-07 21:19:11,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:11,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600837082] [2019-12-07 21:19:11,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:12,048 INFO L264 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 21:19:12,050 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:12,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:12,059 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:12,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600837082] [2019-12-07 21:19:12,082 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1174655156] [2019-12-07 21:19:12,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:12,173 INFO L264 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 21:19:12,175 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:12,186 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:19:12,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2019-12-07 21:19:12,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3, 3] total 7 [2019-12-07 21:19:12,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828546751] [2019-12-07 21:19:12,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:19:12,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:12,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:19:12,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:19:12,191 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand 3 states. [2019-12-07 21:19:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:12,341 INFO L93 Difference]: Finished difference Result 424 states and 588 transitions. [2019-12-07 21:19:12,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:19:12,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-12-07 21:19:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:12,343 INFO L225 Difference]: With dead ends: 424 [2019-12-07 21:19:12,343 INFO L226 Difference]: Without dead ends: 154 [2019-12-07 21:19:12,344 INFO L630 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 [2019-12-07 21:19:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-12-07 21:19:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-12-07 21:19:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-12-07 21:19:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2019-12-07 21:19:12,357 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 48 [2019-12-07 21:19:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:12,358 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2019-12-07 21:19:12,358 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:19:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2019-12-07 21:19:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-12-07 21:19:12,359 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:12,359 INFO L410 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] [2019-12-07 21:19:12,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 21:19:12,762 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1761073962, now seen corresponding path program 1 times [2019-12-07 21:19:12,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:12,764 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075754672] [2019-12-07 21:19:12,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:12,940 INFO L264 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 21:19:12,941 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:19:12,955 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:19:12,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075754672] [2019-12-07 21:19:12,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:12,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 21:19:12,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542089937] [2019-12-07 21:19:12,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:19:12,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:12,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:19:12,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:19:12,959 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand 5 states. [2019-12-07 21:19:13,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:13,008 INFO L93 Difference]: Finished difference Result 421 states and 560 transitions. [2019-12-07 21:19:13,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:19:13,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2019-12-07 21:19:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:13,009 INFO L225 Difference]: With dead ends: 421 [2019-12-07 21:19:13,009 INFO L226 Difference]: Without dead ends: 273 [2019-12-07 21:19:13,010 INFO L630 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 [2019-12-07 21:19:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-12-07 21:19:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 169. [2019-12-07 21:19:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-12-07 21:19:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2019-12-07 21:19:13,019 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 49 [2019-12-07 21:19:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:13,019 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2019-12-07 21:19:13,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:19:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2019-12-07 21:19:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-12-07 21:19:13,020 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:13,020 INFO L410 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] [2019-12-07 21:19:13,220 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-12-07 21:19:13,222 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:13,222 INFO L82 PathProgramCache]: Analyzing trace with hash -374870568, now seen corresponding path program 1 times [2019-12-07 21:19:13,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:13,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758124856] [2019-12-07 21:19:13,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:13,356 INFO L264 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 21:19:13,357 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:19:13,365 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 21:19:13,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758124856] [2019-12-07 21:19:13,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:19:13,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 21:19:13,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272699124] [2019-12-07 21:19:13,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 21:19:13,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:13,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 21:19:13,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 21:19:13,376 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand 6 states. [2019-12-07 21:19:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:13,416 INFO L93 Difference]: Finished difference Result 397 states and 519 transitions. [2019-12-07 21:19:13,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 21:19:13,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2019-12-07 21:19:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:13,417 INFO L225 Difference]: With dead ends: 397 [2019-12-07 21:19:13,418 INFO L226 Difference]: Without dead ends: 234 [2019-12-07 21:19:13,418 INFO L630 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 [2019-12-07 21:19:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2019-12-07 21:19:13,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 148. [2019-12-07 21:19:13,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-12-07 21:19:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2019-12-07 21:19:13,427 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 49 [2019-12-07 21:19:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:13,427 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2019-12-07 21:19:13,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 21:19:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2019-12-07 21:19:13,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 21:19:13,428 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:13,428 INFO L410 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] [2019-12-07 21:19:13,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2019-12-07 21:19:13,630 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:13,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:13,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2038322788, now seen corresponding path program 1 times [2019-12-07 21:19:13,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:13,632 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552163293] [2019-12-07 21:19:13,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:13,776 INFO L264 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 21:19:13,778 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:19:13,796 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:19:13,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552163293] [2019-12-07 21:19:13,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1319612189] [2019-12-07 21:19:13,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:13,925 INFO L264 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 21:19:13,926 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:19:13,933 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:19:13,940 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307251507] [2019-12-07 21:19:13,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:19:14,093 INFO L264 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 21:19:14,094 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 21:19:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:19:14,104 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 21:19:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 21:19:14,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2019-12-07 21:19:14,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2019-12-07 21:19:14,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633995480] [2019-12-07 21:19:14,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 21:19:14,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 21:19:14,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 21:19:14,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-12-07 21:19:14,114 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand 10 states. [2019-12-07 21:19:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:19:14,660 INFO L93 Difference]: Finished difference Result 959 states and 1265 transitions. [2019-12-07 21:19:14,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-12-07 21:19:14,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2019-12-07 21:19:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:19:14,664 INFO L225 Difference]: With dead ends: 959 [2019-12-07 21:19:14,664 INFO L226 Difference]: Without dead ends: 841 [2019-12-07 21:19:14,665 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-12-07 21:19:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2019-12-07 21:19:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 264. [2019-12-07 21:19:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2019-12-07 21:19:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2019-12-07 21:19:14,684 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 50 [2019-12-07 21:19:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:19:14,684 INFO L462 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2019-12-07 21:19:14,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 21:19:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2019-12-07 21:19:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-12-07 21:19:14,685 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:19:14,685 INFO L410 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] [2019-12-07 21:19:15,286 WARN L499 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 [2019-12-07 21:19:15,288 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:19:15,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:19:15,288 INFO L82 PathProgramCache]: Analyzing trace with hash 564554040, now seen corresponding path program 2 times [2019-12-07 21:19:15,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:19:15,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922626975] [2019-12-07 21:19:15,290 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/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 [2019-12-07 21:19:15,955 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 21:19:15,955 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-12-07 21:19:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:19:16,760 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 21:19:16,761 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:19:16,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2019-12-07 21:19:17,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:19:17 BoogieIcfgContainer [2019-12-07 21:19:17,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:19:17,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:19:17,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:19:17,089 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:19:17,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:19:08" (3/4) ... [2019-12-07 21:19:17,090 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:19:17,170 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_78264043-571e-451e-92cf-cf8a8794c9e9/bin/utaipan/witness.graphml [2019-12-07 21:19:17,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:19:17,171 INFO L168 Benchmark]: Toolchain (without parser) took 9771.29 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 285.7 MB). Free memory was 953.7 MB in the beginning and 1.1 GB in the end (delta: -101.2 MB). Peak memory consumption was 184.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:17,171 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:19:17,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -127.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:17,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:17,172 INFO L168 Benchmark]: Boogie Preprocessor took 33.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:19:17,172 INFO L168 Benchmark]: RCFGBuilder took 542.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.4 MB in the end (delta: 81.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:17,172 INFO L168 Benchmark]: TraceAbstraction took 8692.42 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 177.2 MB). Free memory was 987.4 MB in the beginning and 1.1 GB in the end (delta: -94.2 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:17,172 INFO L168 Benchmark]: Witness Printer took 81.63 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:19:17,174 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 372.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -127.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 542.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.4 MB in the end (delta: 81.7 MB). Peak memory consumption was 81.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8692.42 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 177.2 MB). Free memory was 987.4 MB in the beginning and 1.1 GB in the end (delta: -94.2 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. * Witness Printer took 81.63 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int pumpRunning = 0; [L525] int systemActive = 1; [L728] int waterLevel = 1; [L729] int methaneLevelCritical = 0; [L822] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L895] int retValue_acc ; [L896] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L450] int splverifierCounter ; [L451] int tmp ; [L452] int tmp___0 ; [L453] int tmp___1 ; [L454] int tmp___2 ; [L457] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L746] COND TRUE waterLevel < 2 [L747] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L532] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L539] COND TRUE \read(systemActive) [L587] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L590] COND FALSE !(\read(pumpRunning)) [L561] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND TRUE ! pumpRunning [L684] int retValue_acc ; [L685] int tmp ; [L686] int tmp___0 ; [L808] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L811] COND FALSE !(waterLevel < 2) [L815] retValue_acc = 0 [L816] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L690] tmp = isHighWaterSensorDry() [L692] COND FALSE !(\read(tmp)) [L695] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L697] retValue_acc = tmp___0 [L698] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L566] tmp = isHighWaterLevel() [L568] COND TRUE \read(tmp) [L615] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L532] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L539] COND TRUE \read(systemActive) [L587] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L590] COND TRUE \read(pumpRunning) [L628] int retValue_acc ; [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L561] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L532] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L539] COND TRUE \read(systemActive) [L587] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L590] COND TRUE \read(pumpRunning) [L628] int retValue_acc ; [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L561] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L564] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L924] tmp = getWaterLevel() [L926] COND TRUE tmp == 0 [L639] int retValue_acc ; [L642] retValue_acc = pumpRunning [L643] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L928] tmp___0 = isPumpRunning() [L930] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L722] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 113 locations, 3 error locations. Result: UNSAFE, OverallTime: 8.5s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1025 SDtfs, 2266 SDslu, 2191 SDs, 0 SdLazy, 433 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 995 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 1415 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 597 NumberOfCodeBlocks, 597 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1028 ConstructedInterpolants, 0 QuantifiedInterpolants, 107557 SizeOfPredicates, 27 NumberOfNonLiveVariables, 2848 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...