./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:38:50,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:50,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:50,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:50,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:50,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:50,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:50,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:50,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:50,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:50,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:50,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:50,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:50,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:50,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:50,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:50,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:50,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:50,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:50,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:50,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:50,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:50,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:50,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:50,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:50,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:50,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:50,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:50,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:50,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:50,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:50,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:50,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:50,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:50,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:50,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:50,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:50,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:50,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:50,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:50,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:50,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:38:50,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:50,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:50,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:50,792 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:50,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:50,793 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:50,793 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:38:50,793 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:50,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:50,793 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:38:50,794 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:38:50,794 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:50,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:38:50,794 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:38:50,795 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:38:50,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:50,796 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:50,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:38:50,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:50,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:50,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:50,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:50,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:50,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:50,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:50,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:50,798 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:50,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:50,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:50,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:50,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:50,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:50,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:50,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:50,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:50,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:38:50,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:38:50,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:50,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:50,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:50,801 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 [2020-11-28 07:38:51,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:51,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:51,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:51,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:51,094 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:51,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2020-11-28 07:38:51,180 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/f105eab4e/fe20c6b984d348dbbafde4ccf07f59e5/FLAGd25891712 [2020-11-28 07:38:51,709 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:51,710 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2020-11-28 07:38:51,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/f105eab4e/fe20c6b984d348dbbafde4ccf07f59e5/FLAGd25891712 [2020-11-28 07:38:52,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/f105eab4e/fe20c6b984d348dbbafde4ccf07f59e5 [2020-11-28 07:38:52,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:52,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:52,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:52,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:52,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:52,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ae9eb02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52, skipping insertion in model container [2020-11-28 07:38:52,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:52" (1/1) ... [2020-11-28 07:38:52,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:52,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:52,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:52,486 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-11-28 07:38:52,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f7b0cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:52, skipping insertion in model container [2020-11-28 07:38:52,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:52,490 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-28 07:38:52,492 INFO L168 Benchmark]: Toolchain (without parser) took 476.34 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 45.6 MB in the beginning and 77.7 MB in the end (delta: -32.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:52,494 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 79.7 MB. Free memory was 52.2 MB in the beginning and 52.2 MB in the end (delta: 24.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:52,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.15 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 45.4 MB in the beginning and 77.7 MB in the end (delta: -32.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:52,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 79.7 MB. Free memory was 52.2 MB in the beginning and 52.2 MB in the end (delta: 24.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 474.15 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 45.4 MB in the beginning and 77.7 MB in the end (delta: -32.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 444]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:38:54,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:38:54,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:38:54,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:38:54,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:38:54,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:38:54,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:38:54,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:38:54,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:38:54,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:38:54,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:38:54,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:38:54,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:38:54,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:38:54,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:38:54,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:38:54,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:38:54,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:38:54,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:38:54,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:38:54,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:38:54,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:38:54,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:38:54,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:38:54,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:38:54,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:38:54,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:38:54,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:38:54,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:38:54,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:38:54,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:38:54,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:38:54,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:38:54,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:38:54,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:38:54,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:38:54,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:38:54,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:38:54,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:38:54,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:38:54,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:38:54,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:38:54,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:38:54,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:38:54,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:38:54,913 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:38:54,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:38:54,913 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:38:54,914 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:38:54,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:38:54,914 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:38:54,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:38:54,917 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:38:54,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:38:54,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:38:54,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:38:54,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:38:54,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:38:54,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:38:54,919 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:38:54,919 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:38:54,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:38:54,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:38:54,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:38:54,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:38:54,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:38:54,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:38:54,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:38:54,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:38:54,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:54,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:38:54,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:38:54,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:38:54,923 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:38:54,923 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:38:54,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:38:54,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:38:54,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:38:54,948 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 [2020-11-28 07:38:55,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:38:55,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:38:55,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:38:55,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:38:55,395 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:38:55,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2020-11-28 07:38:55,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/512827794/9e76fe6ae73e40ceb8cc02cc634ac6e5/FLAGe83227750 [2020-11-28 07:38:56,091 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:38:56,095 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2020-11-28 07:38:56,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/512827794/9e76fe6ae73e40ceb8cc02cc634ac6e5/FLAGe83227750 [2020-11-28 07:38:56,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/data/512827794/9e76fe6ae73e40ceb8cc02cc634ac6e5 [2020-11-28 07:38:56,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:56,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:56,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:56,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:56,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:56,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:56" (1/1) ... [2020-11-28 07:38:56,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74cbf74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:56, skipping insertion in model container [2020-11-28 07:38:56,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:56" (1/1) ... [2020-11-28 07:38:56,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:56,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:56,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:56,900 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-28 07:38:56,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:56,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:56,992 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:57,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:57,143 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:57,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57 WrapperNode [2020-11-28 07:38:57,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:57,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:57,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:57,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:57,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:57,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:57,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:57,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:57,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... [2020-11-28 07:38:57,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:57,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:57,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:57,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:57,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:38:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:38:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:57,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:59,649 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:59,650 INFO L298 CfgBuilder]: Removed 106 assume(true) statements. [2020-11-28 07:38:59,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:59 BoogieIcfgContainer [2020-11-28 07:38:59,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:59,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:59,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:59,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:59,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:56" (1/3) ... [2020-11-28 07:38:59,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258b6818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:59, skipping insertion in model container [2020-11-28 07:38:59,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:57" (2/3) ... [2020-11-28 07:38:59,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258b6818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:59, skipping insertion in model container [2020-11-28 07:38:59,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:59" (3/3) ... [2020-11-28 07:38:59,659 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-11-28 07:38:59,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:59,675 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 07:38:59,687 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 07:38:59,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:59,729 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:59,729 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:59,729 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:59,729 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:59,729 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:59,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:59,730 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-11-28 07:38:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:38:59,753 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:59,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:59,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:59,759 INFO L82 PathProgramCache]: Analyzing trace with hash 349597533, now seen corresponding path program 1 times [2020-11-28 07:38:59,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:38:59,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157256157] [2020-11-28 07:38:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:38:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:59,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:38:59,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:00,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:00,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157256157] [2020-11-28 07:39:00,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:00,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:39:00,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372077080] [2020-11-28 07:39:00,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:39:00,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:00,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:39:00,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:00,037 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2020-11-28 07:39:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:00,063 INFO L93 Difference]: Finished difference Result 157 states and 236 transitions. [2020-11-28 07:39:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:39:00,065 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-28 07:39:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:00,075 INFO L225 Difference]: With dead ends: 157 [2020-11-28 07:39:00,075 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 07:39:00,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 07:39:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-28 07:39:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-28 07:39:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2020-11-28 07:39:00,117 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2020-11-28 07:39:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:00,118 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2020-11-28 07:39:00,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:39:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2020-11-28 07:39:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 07:39:00,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:00,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:00,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:39:00,341 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash -697159364, now seen corresponding path program 1 times [2020-11-28 07:39:00,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:00,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322954824] [2020-11-28 07:39:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:00,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:39:00,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:00,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:00,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322954824] [2020-11-28 07:39:00,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:00,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:39:00,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157289876] [2020-11-28 07:39:00,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:39:00,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:00,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:39:00,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:00,597 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 4 states. [2020-11-28 07:39:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:00,614 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-11-28 07:39:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:00,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 07:39:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:00,616 INFO L225 Difference]: With dead ends: 76 [2020-11-28 07:39:00,616 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 07:39:00,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 07:39:00,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 07:39:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 07:39:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-11-28 07:39:00,626 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2020-11-28 07:39:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:00,627 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-11-28 07:39:00,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:39:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-11-28 07:39:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:39:00,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:00,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:00,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:39:00,843 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:00,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:00,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1160602350, now seen corresponding path program 1 times [2020-11-28 07:39:00,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:00,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044021987] [2020-11-28 07:39:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:01,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:39:01,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:01,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:01,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:01,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044021987] [2020-11-28 07:39:01,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:01,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-28 07:39:01,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143616758] [2020-11-28 07:39:01,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:39:01,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:01,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:39:01,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:01,193 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 4 states. [2020-11-28 07:39:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:01,232 INFO L93 Difference]: Finished difference Result 119 states and 175 transitions. [2020-11-28 07:39:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:39:01,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-11-28 07:39:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:01,234 INFO L225 Difference]: With dead ends: 119 [2020-11-28 07:39:01,234 INFO L226 Difference]: Without dead ends: 89 [2020-11-28 07:39:01,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:39:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-28 07:39:01,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 55. [2020-11-28 07:39:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 07:39:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2020-11-28 07:39:01,247 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 22 [2020-11-28 07:39:01,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:01,248 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2020-11-28 07:39:01,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:39:01,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2020-11-28 07:39:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 07:39:01,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:01,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:01,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:39:01,474 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:01,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1572373846, now seen corresponding path program 1 times [2020-11-28 07:39:01,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:01,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718720582] [2020-11-28 07:39:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:01,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:39:01,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:01,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:01,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718720582] [2020-11-28 07:39:01,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:01,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:39:01,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116320082] [2020-11-28 07:39:01,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:01,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:01,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:01,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:01,671 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand 3 states. [2020-11-28 07:39:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:01,757 INFO L93 Difference]: Finished difference Result 125 states and 184 transitions. [2020-11-28 07:39:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:01,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-11-28 07:39:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:01,759 INFO L225 Difference]: With dead ends: 125 [2020-11-28 07:39:01,759 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 07:39:01,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 07:39:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-11-28 07:39:01,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 07:39:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-11-28 07:39:01,778 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 23 [2020-11-28 07:39:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:01,779 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-11-28 07:39:01,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-11-28 07:39:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 07:39:01,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:01,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:01,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:39:01,998 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:01,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:01,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1956458727, now seen corresponding path program 1 times [2020-11-28 07:39:01,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:01,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62879777] [2020-11-28 07:39:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:02,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:39:02,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:02,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:02,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62879777] [2020-11-28 07:39:02,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:02,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-28 07:39:02,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212226542] [2020-11-28 07:39:02,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:39:02,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:02,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:39:02,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:39:02,284 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 8 states. [2020-11-28 07:39:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:02,685 INFO L93 Difference]: Finished difference Result 507 states and 746 transitions. [2020-11-28 07:39:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 07:39:02,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-28 07:39:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:02,690 INFO L225 Difference]: With dead ends: 507 [2020-11-28 07:39:02,690 INFO L226 Difference]: Without dead ends: 439 [2020-11-28 07:39:02,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:39:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-11-28 07:39:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 189. [2020-11-28 07:39:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-28 07:39:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 263 transitions. [2020-11-28 07:39:02,767 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 263 transitions. Word has length 25 [2020-11-28 07:39:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:02,769 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 263 transitions. [2020-11-28 07:39:02,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:39:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 263 transitions. [2020-11-28 07:39:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 07:39:02,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:02,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:02,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:39:02,998 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:02,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1507837382, now seen corresponding path program 1 times [2020-11-28 07:39:02,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:03,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270295496] [2020-11-28 07:39:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:03,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:39:03,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:03,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:03,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270295496] [2020-11-28 07:39:03,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1474667479] [2020-11-28 07:39:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:39:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:03,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:39:03,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-28 07:39:03,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-28 07:39:03,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:39:03,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [4, 3] total 10 [2020-11-28 07:39:03,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165943647] [2020-11-28 07:39:03,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:39:03,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:03,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:39:03,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:39:03,584 INFO L87 Difference]: Start difference. First operand 189 states and 263 transitions. Second operand 5 states. [2020-11-28 07:39:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:03,820 INFO L93 Difference]: Finished difference Result 429 states and 608 transitions. [2020-11-28 07:39:03,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:39:03,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-11-28 07:39:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:03,824 INFO L225 Difference]: With dead ends: 429 [2020-11-28 07:39:03,824 INFO L226 Difference]: Without dead ends: 427 [2020-11-28 07:39:03,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:39:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-11-28 07:39:03,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 189. [2020-11-28 07:39:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-28 07:39:03,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 261 transitions. [2020-11-28 07:39:03,867 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 261 transitions. Word has length 40 [2020-11-28 07:39:03,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:03,867 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 261 transitions. [2020-11-28 07:39:03,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:39:03,868 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 261 transitions. [2020-11-28 07:39:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 07:39:03,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:03,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:04,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:39:04,288 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:04,288 INFO L82 PathProgramCache]: Analyzing trace with hash 69765016, now seen corresponding path program 1 times [2020-11-28 07:39:04,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:04,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241656652] [2020-11-28 07:39:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:04,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:39:04,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:39:04,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:39:04,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241656652] [2020-11-28 07:39:04,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:04,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:39:04,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698405694] [2020-11-28 07:39:04,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:39:04,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:04,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:39:04,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:39:04,544 INFO L87 Difference]: Start difference. First operand 189 states and 261 transitions. Second operand 5 states. [2020-11-28 07:39:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:04,638 INFO L93 Difference]: Finished difference Result 565 states and 778 transitions. [2020-11-28 07:39:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:39:04,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-11-28 07:39:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:04,641 INFO L225 Difference]: With dead ends: 565 [2020-11-28 07:39:04,641 INFO L226 Difference]: Without dead ends: 382 [2020-11-28 07:39:04,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:39:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-11-28 07:39:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 198. [2020-11-28 07:39:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-28 07:39:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 270 transitions. [2020-11-28 07:39:04,679 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 270 transitions. Word has length 44 [2020-11-28 07:39:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:04,680 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 270 transitions. [2020-11-28 07:39:04,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:39:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 270 transitions. [2020-11-28 07:39:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 07:39:04,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:04,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:04,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:39:04,907 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:04,908 INFO L82 PathProgramCache]: Analyzing trace with hash 210313626, now seen corresponding path program 1 times [2020-11-28 07:39:04,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:04,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120979428] [2020-11-28 07:39:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:05,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:39:05,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:39:05,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:05,160 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:39:05,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120979428] [2020-11-28 07:39:05,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:05,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:39:05,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542063497] [2020-11-28 07:39:05,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:39:05,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:05,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:39:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:39:05,162 INFO L87 Difference]: Start difference. First operand 198 states and 270 transitions. Second operand 6 states. [2020-11-28 07:39:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:05,253 INFO L93 Difference]: Finished difference Result 530 states and 725 transitions. [2020-11-28 07:39:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:39:05,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-28 07:39:05,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:05,256 INFO L225 Difference]: With dead ends: 530 [2020-11-28 07:39:05,257 INFO L226 Difference]: Without dead ends: 338 [2020-11-28 07:39:05,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:39:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-11-28 07:39:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 177. [2020-11-28 07:39:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-28 07:39:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 238 transitions. [2020-11-28 07:39:05,288 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 238 transitions. Word has length 44 [2020-11-28 07:39:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:05,288 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 238 transitions. [2020-11-28 07:39:05,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:39:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 238 transitions. [2020-11-28 07:39:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 07:39:05,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:05,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:05,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 07:39:05,510 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:05,511 INFO L82 PathProgramCache]: Analyzing trace with hash 253859482, now seen corresponding path program 1 times [2020-11-28 07:39:05,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:05,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036770888] [2020-11-28 07:39:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:05,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:39:05,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:39:05,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:39:05,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036770888] [2020-11-28 07:39:05,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [950393197] [2020-11-28 07:39:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-28 07:39:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:05,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:39:05,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:39:06,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:39:06,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081339961] [2020-11-28 07:39:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:39:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:06,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:39:06,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:39:06,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 07:39:06,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-28 07:39:06,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2020-11-28 07:39:06,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980951869] [2020-11-28 07:39:06,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:39:06,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:06,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:39:06,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:39:06,217 INFO L87 Difference]: Start difference. First operand 177 states and 238 transitions. Second operand 10 states. [2020-11-28 07:39:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:07,291 INFO L93 Difference]: Finished difference Result 1042 states and 1455 transitions. [2020-11-28 07:39:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-28 07:39:07,291 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-11-28 07:39:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:07,297 INFO L225 Difference]: With dead ends: 1042 [2020-11-28 07:39:07,297 INFO L226 Difference]: Without dead ends: 912 [2020-11-28 07:39:07,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2020-11-28 07:39:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2020-11-28 07:39:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 294. [2020-11-28 07:39:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-11-28 07:39:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 402 transitions. [2020-11-28 07:39:07,350 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 402 transitions. Word has length 45 [2020-11-28 07:39:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:07,350 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 402 transitions. [2020-11-28 07:39:07,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:39:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 402 transitions. [2020-11-28 07:39:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-28 07:39:07,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:07,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:39:07,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-11-28 07:39:07,954 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash 874038597, now seen corresponding path program 2 times [2020-11-28 07:39:07,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:07,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179379878] [2020-11-28 07:39:07,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:09,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 07:39:09,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-28 07:39:09,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:39:10,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:10,889 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:39:10,889 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:39:11,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-28 07:39:11,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:39:11 BoogieIcfgContainer [2020-11-28 07:39:11,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:39:11,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:39:11,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:39:11,304 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:39:11,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:59" (3/4) ... [2020-11-28 07:39:11,306 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:39:11,482 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cd79f28c-7400-4f95-9f08-0656fe4926ea/bin/utaipan/witness.graphml [2020-11-28 07:39:11,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:39:11,485 INFO L168 Benchmark]: Toolchain (without parser) took 15102.85 ms. Allocated memory was 73.4 MB in the beginning and 134.2 MB in the end (delta: 60.8 MB). Free memory was 56.1 MB in the beginning and 50.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 66.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:11,485 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 55.0 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:11,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.33 ms. Allocated memory is still 73.4 MB. Free memory was 55.8 MB in the beginning and 38.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:11,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.27 ms. Allocated memory is still 73.4 MB. Free memory was 38.2 MB in the beginning and 35.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:11,492 INFO L168 Benchmark]: Boogie Preprocessor took 56.53 ms. Allocated memory is still 73.4 MB. Free memory was 35.4 MB in the beginning and 33.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:11,493 INFO L168 Benchmark]: RCFGBuilder took 2379.48 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 33.1 MB in the beginning and 40.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:11,493 INFO L168 Benchmark]: TraceAbstraction took 11649.52 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 40.0 MB in the beginning and 73.5 MB in the end (delta: -33.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:11,493 INFO L168 Benchmark]: Witness Printer took 179.18 ms. Allocated memory is still 134.2 MB. Free memory was 73.5 MB in the beginning and 50.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:11,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 73.4 MB. Free memory was 55.1 MB in the beginning and 55.0 MB in the end (delta: 60.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 760.33 ms. Allocated memory is still 73.4 MB. Free memory was 55.8 MB in the beginning and 38.4 MB in the end (delta: 17.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.27 ms. Allocated memory is still 73.4 MB. Free memory was 38.2 MB in the beginning and 35.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.53 ms. Allocated memory is still 73.4 MB. Free memory was 35.4 MB in the beginning and 33.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2379.48 ms. Allocated memory was 73.4 MB in the beginning and 92.3 MB in the end (delta: 18.9 MB). Free memory was 33.1 MB in the beginning and 40.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11649.52 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 40.0 MB in the beginning and 73.5 MB in the end (delta: -33.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Witness Printer took 179.18 ms. Allocated memory is still 134.2 MB. Free memory was 73.5 MB in the beginning and 50.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L150] int pumpRunning = 0; [L151] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L585] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L826] int waterLevel = 1; [L827] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L393] int retValue_acc ; [L394] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] tmp = valid_product() [L402] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L844] COND TRUE waterLevel < 2 [L845] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L906] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L909] COND FALSE !(waterLevel < 2) [L913] retValue_acc = 0 [L914] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] tmp = isHighWaterLevel() [L193] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L123] tmp = getWaterLevel() [L125] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L123] tmp = getWaterLevel() [L125] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L123] tmp = getWaterLevel() [L125] COND TRUE tmp == 0 [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L127] tmp___0 = isPumpRunning() [L129] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product35.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 722 SDtfs, 1766 SDslu, 1782 SDs, 0 SdLazy, 321 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 827 GetRequests, 759 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=294occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1487 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 466 NumberOfCodeBlocks, 466 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 788 ConstructedInterpolants, 1 QuantifiedInterpolants, 89847 SizeOfPredicates, 27 NumberOfNonLiveVariables, 2541 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 16 PerfectInterpolantSequences, 132/196 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...