./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI --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 0c528157ad3ccc512d501b1e66086beae537118a ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI --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 0c528157ad3ccc512d501b1e66086beae537118a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 02:21:31,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:31,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:31,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:31,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:31,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:31,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:31,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:31,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:31,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:31,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:31,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:31,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:31,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:31,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:31,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:31,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:31,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:31,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:31,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:31,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:31,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:31,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:31,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:31,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:31,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:31,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:31,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:31,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:31,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:31,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:31,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:31,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:31,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:31,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:31,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:31,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:31,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:31,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:31,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:31,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:31,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:31,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:31,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:31,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:31,862 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:31,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:31,863 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:31,863 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:31,863 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:31,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:31,864 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:31,864 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:31,864 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:31,864 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:31,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:31,865 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:31,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:31,866 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:31,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:31,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:31,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:31,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:31,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:31,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:31,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:31,868 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:31,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:31,868 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:31,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:31,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:31,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:31,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:31,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:31,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:31,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:31,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:31,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:31,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:31,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:31,875 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:31,875 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_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c528157ad3ccc512d501b1e66086beae537118a [2021-10-11 02:21:32,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:32,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:32,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:32,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:32,256 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:32,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-11 02:21:32,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/40b5f2460/08e680bad47844389ac3ad13074ed23c/FLAG54e096d6f [2021-10-11 02:21:32,873 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:32,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-11 02:21:32,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/40b5f2460/08e680bad47844389ac3ad13074ed23c/FLAG54e096d6f [2021-10-11 02:21:33,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/40b5f2460/08e680bad47844389ac3ad13074ed23c [2021-10-11 02:21:33,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:33,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:33,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:33,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:33,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:33,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:33" (1/1) ... [2021-10-11 02:21:33,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb6e267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:33, skipping insertion in model container [2021-10-11 02:21:33,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:33" (1/1) ... [2021-10-11 02:21:33,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:33,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:33,636 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[12686,12699] [2021-10-11 02:21:33,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:33,694 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) [2021-10-11 02:21:33,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6101cef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:33, skipping insertion in model container [2021-10-11 02:21:33,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:33,695 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-11 02:21:33,698 INFO L168 Benchmark]: Toolchain (without parser) took 498.82 ms. Allocated memory is still 134.2 MB. Free memory was 99.9 MB in the beginning and 105.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:33,699 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 83.9 MB. Free memory was 39.6 MB in the beginning and 39.6 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:33,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.05 ms. Allocated memory is still 134.2 MB. Free memory was 99.9 MB in the beginning and 105.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:33,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 83.9 MB. Free memory was 39.6 MB in the beginning and 39.6 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 494.05 ms. Allocated memory is still 134.2 MB. Free memory was 99.9 MB in the beginning and 105.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 203]: 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 0.2.0-7b2dab5 [2021-10-11 02:21:36,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:36,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:36,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:36,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:36,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:36,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:36,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:36,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:36,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:36,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:36,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:36,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:36,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:36,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:36,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:36,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:36,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:36,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:36,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:36,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:36,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:36,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:36,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:36,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:36,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:36,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:36,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:36,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:36,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:36,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:36,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:36,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:36,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:36,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:36,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:36,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:36,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:36,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:36,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:36,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:36,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:21:36,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:36,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:36,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:36,169 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:36,180 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:36,180 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:36,180 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:36,180 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:36,180 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:36,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:36,182 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:36,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:36,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:36,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:36,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:36,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:36,183 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:36,183 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:21:36,183 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:21:36,184 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:36,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:36,184 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:36,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:36,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:36,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:21:36,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:36,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:36,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:36,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:36,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:36,186 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:21:36,186 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:36,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:36,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:36,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:36,187 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_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c528157ad3ccc512d501b1e66086beae537118a [2021-10-11 02:21:36,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:36,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:36,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:36,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:36,579 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:36,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-11 02:21:36,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/37b3ffe65/23c290d215a5490cb223de2d7f345157/FLAG66ad40642 [2021-10-11 02:21:37,241 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:37,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2021-10-11 02:21:37,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/37b3ffe65/23c290d215a5490cb223de2d7f345157/FLAG66ad40642 [2021-10-11 02:21:37,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/data/37b3ffe65/23c290d215a5490cb223de2d7f345157 [2021-10-11 02:21:37,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:37,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:37,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:37,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:37,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:37,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:37" (1/1) ... [2021-10-11 02:21:37,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db7f5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:37, skipping insertion in model container [2021-10-11 02:21:37,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:37" (1/1) ... [2021-10-11 02:21:37,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:37,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:37,913 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[12686,12699] [2021-10-11 02:21:37,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:37,995 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-11 02:21:38,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:38,090 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[12686,12699] [2021-10-11 02:21:38,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:38,133 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:38,176 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[12686,12699] [2021-10-11 02:21:38,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:38,242 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:38,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38 WrapperNode [2021-10-11 02:21:38,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:38,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:38,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:38,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:38,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:38,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:38,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:38,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:38,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... [2021-10-11 02:21:38,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:38,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:38,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:38,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:38,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:21:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:40,881 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:40,881 INFO L299 CfgBuilder]: Removed 194 assume(true) statements. [2021-10-11 02:21:40,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:40 BoogieIcfgContainer [2021-10-11 02:21:40,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:40,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:40,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:40,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:40,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:37" (1/3) ... [2021-10-11 02:21:40,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4a2c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:40, skipping insertion in model container [2021-10-11 02:21:40,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:38" (2/3) ... [2021-10-11 02:21:40,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4a2c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:40, skipping insertion in model container [2021-10-11 02:21:40,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:40" (3/3) ... [2021-10-11 02:21:40,893 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2021-10-11 02:21:40,907 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:40,911 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:21:40,923 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:21:40,963 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:40,963 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:40,963 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:40,963 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:40,963 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:40,963 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:40,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:40,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2021-10-11 02:21:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:21:40,985 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:40,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:40,986 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:40,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:40,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1027746333, now seen corresponding path program 1 times [2021-10-11 02:21:41,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:41,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083613936] [2021-10-11 02:21:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:41,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:21:41,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:41,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:41,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083613936] [2021-10-11 02:21:41,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:41,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:41,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365796435] [2021-10-11 02:21:41,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:41,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:41,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:41,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:41,338 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2021-10-11 02:21:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,372 INFO L93 Difference]: Finished difference Result 252 states and 377 transitions. [2021-10-11 02:21:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:41,373 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 02:21:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,383 INFO L225 Difference]: With dead ends: 252 [2021-10-11 02:21:41,384 INFO L226 Difference]: Without dead ends: 125 [2021-10-11 02:21:41,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-11 02:21:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-11 02:21:41,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2021-10-11 02:21:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2021-10-11 02:21:41,431 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2021-10-11 02:21:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:41,431 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2021-10-11 02:21:41,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:41,431 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2021-10-11 02:21:41,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:21:41,432 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:41,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:41,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:21:41,650 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:41,651 INFO L82 PathProgramCache]: Analyzing trace with hash -2074503230, now seen corresponding path program 1 times [2021-10-11 02:21:41,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:41,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237758633] [2021-10-11 02:21:41,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:41,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:41,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:41,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:41,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237758633] [2021-10-11 02:21:41,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:41,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:41,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512978030] [2021-10-11 02:21:41,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:41,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:41,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,960 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2021-10-11 02:21:41,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:41,985 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2021-10-11 02:21:41,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:41,988 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 02:21:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:41,991 INFO L225 Difference]: With dead ends: 125 [2021-10-11 02:21:41,992 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:21:41,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:21:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:21:42,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:21:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2021-10-11 02:21:42,012 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2021-10-11 02:21:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:42,014 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2021-10-11 02:21:42,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2021-10-11 02:21:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 02:21:42,017 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:42,017 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] [2021-10-11 02:21:42,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:21:42,237 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash 640818778, now seen corresponding path program 1 times [2021-10-11 02:21:42,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:42,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320558797] [2021-10-11 02:21:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:42,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:42,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:42,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320558797] [2021-10-11 02:21:42,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:42,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:42,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116566388] [2021-10-11 02:21:42,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:42,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:42,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:42,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,467 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2021-10-11 02:21:42,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:42,519 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2021-10-11 02:21:42,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:42,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 02:21:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:42,521 INFO L225 Difference]: With dead ends: 96 [2021-10-11 02:21:42,523 INFO L226 Difference]: Without dead ends: 51 [2021-10-11 02:21:42,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-11 02:21:42,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-11 02:21:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-10-11 02:21:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2021-10-11 02:21:42,534 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2021-10-11 02:21:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:42,544 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2021-10-11 02:21:42,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2021-10-11 02:21:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:21:42,545 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:42,545 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] [2021-10-11 02:21:42,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:21:42,747 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:42,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:42,748 INFO L82 PathProgramCache]: Analyzing trace with hash -855709928, now seen corresponding path program 1 times [2021-10-11 02:21:42,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:42,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345664646] [2021-10-11 02:21:42,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:42,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:42,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:42,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:42,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:42,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345664646] [2021-10-11 02:21:42,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:42,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:42,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634746780] [2021-10-11 02:21:42,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:42,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:42,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:42,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:42,991 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2021-10-11 02:21:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,067 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2021-10-11 02:21:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:43,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 02:21:43,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,070 INFO L225 Difference]: With dead ends: 117 [2021-10-11 02:21:43,070 INFO L226 Difference]: Without dead ends: 72 [2021-10-11 02:21:43,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:43,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-11 02:21:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-10-11 02:21:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:21:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2021-10-11 02:21:43,081 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2021-10-11 02:21:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,083 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2021-10-11 02:21:43,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2021-10-11 02:21:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:21:43,084 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:43,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:21:43,299 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:43,300 INFO L82 PathProgramCache]: Analyzing trace with hash -407287284, now seen corresponding path program 1 times [2021-10-11 02:21:43,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:43,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301345257] [2021-10-11 02:21:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:43,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:21:43,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:43,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:43,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301345257] [2021-10-11 02:21:43,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:43,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:43,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088149488] [2021-10-11 02:21:43,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:43,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:43,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:43,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:43,638 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2021-10-11 02:21:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:43,799 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2021-10-11 02:21:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:43,800 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-10-11 02:21:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:43,803 INFO L225 Difference]: With dead ends: 247 [2021-10-11 02:21:43,803 INFO L226 Difference]: Without dead ends: 183 [2021-10-11 02:21:43,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-11 02:21:43,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2021-10-11 02:21:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-10-11 02:21:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2021-10-11 02:21:43,846 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2021-10-11 02:21:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:43,847 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2021-10-11 02:21:43,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2021-10-11 02:21:43,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:21:43,853 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:43,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:44,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2021-10-11 02:21:44,070 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1879863818, now seen corresponding path program 1 times [2021-10-11 02:21:44,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:44,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868743559] [2021-10-11 02:21:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:44,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:44,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:44,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:44,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868743559] [2021-10-11 02:21:44,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:44,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:44,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166957638] [2021-10-11 02:21:44,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:44,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:44,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:44,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:44,354 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2021-10-11 02:21:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,812 INFO L93 Difference]: Finished difference Result 290 states and 409 transitions. [2021-10-11 02:21:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:45,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-10-11 02:21:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,815 INFO L225 Difference]: With dead ends: 290 [2021-10-11 02:21:45,815 INFO L226 Difference]: Without dead ends: 226 [2021-10-11 02:21:45,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-11 02:21:45,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 219. [2021-10-11 02:21:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2021-10-11 02:21:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 303 transitions. [2021-10-11 02:21:45,844 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 303 transitions. Word has length 31 [2021-10-11 02:21:45,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,845 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 303 transitions. [2021-10-11 02:21:45,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:45,845 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 303 transitions. [2021-10-11 02:21:45,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:21:45,846 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:46,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2021-10-11 02:21:46,055 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:46,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:46,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2138029256, now seen corresponding path program 1 times [2021-10-11 02:21:46,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:46,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853690011] [2021-10-11 02:21:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:46,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:21:46,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:46,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:46,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853690011] [2021-10-11 02:21:46,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:46,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:46,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852488306] [2021-10-11 02:21:46,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:46,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:46,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:46,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:46,299 INFO L87 Difference]: Start difference. First operand 219 states and 303 transitions. Second operand 4 states. [2021-10-11 02:21:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:46,404 INFO L93 Difference]: Finished difference Result 685 states and 960 transitions. [2021-10-11 02:21:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:46,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-10-11 02:21:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:46,409 INFO L225 Difference]: With dead ends: 685 [2021-10-11 02:21:46,409 INFO L226 Difference]: Without dead ends: 512 [2021-10-11 02:21:46,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-11 02:21:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 223. [2021-10-11 02:21:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-10-11 02:21:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 306 transitions. [2021-10-11 02:21:46,471 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 306 transitions. Word has length 31 [2021-10-11 02:21:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:46,471 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 306 transitions. [2021-10-11 02:21:46,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 306 transitions. [2021-10-11 02:21:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 02:21:46,474 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:46,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:46,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2021-10-11 02:21:46,693 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:46,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1745002246, now seen corresponding path program 1 times [2021-10-11 02:21:46,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:46,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930185600] [2021-10-11 02:21:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:46,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:21:46,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:46,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:46,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930185600] [2021-10-11 02:21:46,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:46,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:46,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232567724] [2021-10-11 02:21:46,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:46,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:46,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:46,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:46,949 INFO L87 Difference]: Start difference. First operand 223 states and 306 transitions. Second operand 5 states. [2021-10-11 02:21:47,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:47,089 INFO L93 Difference]: Finished difference Result 712 states and 991 transitions. [2021-10-11 02:21:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:47,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-10-11 02:21:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:47,093 INFO L225 Difference]: With dead ends: 712 [2021-10-11 02:21:47,093 INFO L226 Difference]: Without dead ends: 495 [2021-10-11 02:21:47,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-11 02:21:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 238. [2021-10-11 02:21:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-10-11 02:21:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 320 transitions. [2021-10-11 02:21:47,125 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 320 transitions. Word has length 31 [2021-10-11 02:21:47,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:47,126 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 320 transitions. [2021-10-11 02:21:47,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 320 transitions. [2021-10-11 02:21:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 02:21:47,127 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:47,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:47,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2021-10-11 02:21:47,346 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1770472833, now seen corresponding path program 1 times [2021-10-11 02:21:47,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:47,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892662707] [2021-10-11 02:21:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:47,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:21:47,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:47,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:47,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:47,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892662707] [2021-10-11 02:21:47,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:47,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:47,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884913310] [2021-10-11 02:21:47,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:47,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:47,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:47,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:47,621 INFO L87 Difference]: Start difference. First operand 238 states and 320 transitions. Second operand 6 states. [2021-10-11 02:21:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:47,921 INFO L93 Difference]: Finished difference Result 1154 states and 1547 transitions. [2021-10-11 02:21:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:21:47,921 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-10-11 02:21:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:47,926 INFO L225 Difference]: With dead ends: 1154 [2021-10-11 02:21:47,927 INFO L226 Difference]: Without dead ends: 922 [2021-10-11 02:21:47,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:21:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-10-11 02:21:47,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 458. [2021-10-11 02:21:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2021-10-11 02:21:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 606 transitions. [2021-10-11 02:21:47,991 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 606 transitions. Word has length 34 [2021-10-11 02:21:47,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:47,992 INFO L481 AbstractCegarLoop]: Abstraction has 458 states and 606 transitions. [2021-10-11 02:21:47,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 606 transitions. [2021-10-11 02:21:47,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-11 02:21:47,992 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:47,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:48,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2021-10-11 02:21:48,209 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:48,210 INFO L82 PathProgramCache]: Analyzing trace with hash 4534529, now seen corresponding path program 1 times [2021-10-11 02:21:48,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:48,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124667482] [2021-10-11 02:21:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:48,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:21:48,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:48,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:48,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124667482] [2021-10-11 02:21:48,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:48,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:48,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223444642] [2021-10-11 02:21:48,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:48,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:48,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:48,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:48,488 INFO L87 Difference]: Start difference. First operand 458 states and 606 transitions. Second operand 6 states. [2021-10-11 02:21:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:49,973 INFO L93 Difference]: Finished difference Result 940 states and 1239 transitions. [2021-10-11 02:21:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:21:49,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-10-11 02:21:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:49,978 INFO L225 Difference]: With dead ends: 940 [2021-10-11 02:21:49,978 INFO L226 Difference]: Without dead ends: 574 [2021-10-11 02:21:49,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-10-11 02:21:50,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 452. [2021-10-11 02:21:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2021-10-11 02:21:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 594 transitions. [2021-10-11 02:21:50,041 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 594 transitions. Word has length 34 [2021-10-11 02:21:50,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:50,041 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 594 transitions. [2021-10-11 02:21:50,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 594 transitions. [2021-10-11 02:21:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:21:50,043 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:50,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:50,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2021-10-11 02:21:50,262 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:50,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:50,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2129473089, now seen corresponding path program 1 times [2021-10-11 02:21:50,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:50,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499329897] [2021-10-11 02:21:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:50,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:21:50,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:50,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:50,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499329897] [2021-10-11 02:21:50,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:50,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:50,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175573583] [2021-10-11 02:21:50,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:50,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:50,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:50,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:50,530 INFO L87 Difference]: Start difference. First operand 452 states and 594 transitions. Second operand 5 states. [2021-10-11 02:21:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:50,680 INFO L93 Difference]: Finished difference Result 1031 states and 1358 transitions. [2021-10-11 02:21:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:50,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2021-10-11 02:21:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:50,684 INFO L225 Difference]: With dead ends: 1031 [2021-10-11 02:21:50,684 INFO L226 Difference]: Without dead ends: 585 [2021-10-11 02:21:50,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-10-11 02:21:50,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 452. [2021-10-11 02:21:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2021-10-11 02:21:50,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 584 transitions. [2021-10-11 02:21:50,763 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 584 transitions. Word has length 51 [2021-10-11 02:21:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:50,764 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 584 transitions. [2021-10-11 02:21:50,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 584 transitions. [2021-10-11 02:21:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:21:50,765 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:50,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:50,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2021-10-11 02:21:50,977 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1463894333, now seen corresponding path program 1 times [2021-10-11 02:21:50,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:50,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623963742] [2021-10-11 02:21:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:21:51,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:51,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:51,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623963742] [2021-10-11 02:21:51,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:51,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:51,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689802016] [2021-10-11 02:21:51,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:51,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:51,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:51,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:51,237 INFO L87 Difference]: Start difference. First operand 452 states and 584 transitions. Second operand 4 states. [2021-10-11 02:21:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:51,375 INFO L93 Difference]: Finished difference Result 957 states and 1247 transitions. [2021-10-11 02:21:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:51,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-10-11 02:21:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:51,378 INFO L225 Difference]: With dead ends: 957 [2021-10-11 02:21:51,379 INFO L226 Difference]: Without dead ends: 511 [2021-10-11 02:21:51,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-10-11 02:21:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 388. [2021-10-11 02:21:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2021-10-11 02:21:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 496 transitions. [2021-10-11 02:21:51,436 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 496 transitions. Word has length 51 [2021-10-11 02:21:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:51,436 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 496 transitions. [2021-10-11 02:21:51,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:51,437 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 496 transitions. [2021-10-11 02:21:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:21:51,437 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:51,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:51,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2021-10-11 02:21:51,653 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:51,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1981323655, now seen corresponding path program 1 times [2021-10-11 02:21:51,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:51,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424969784] [2021-10-11 02:21:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:21:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:51,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:21:51,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:21:51,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:21:51,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424969784] [2021-10-11 02:21:51,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:51,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:21:51,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930979677] [2021-10-11 02:21:51,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:51,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:51,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:51,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:51,968 INFO L87 Difference]: Start difference. First operand 388 states and 496 transitions. Second operand 6 states. [2021-10-11 02:21:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:52,281 INFO L93 Difference]: Finished difference Result 1116 states and 1468 transitions. [2021-10-11 02:21:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-11 02:21:52,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-10-11 02:21:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:52,286 INFO L225 Difference]: With dead ends: 1116 [2021-10-11 02:21:52,286 INFO L226 Difference]: Without dead ends: 780 [2021-10-11 02:21:52,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:21:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-11 02:21:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 388. [2021-10-11 02:21:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2021-10-11 02:21:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 494 transitions. [2021-10-11 02:21:52,346 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 494 transitions. Word has length 52 [2021-10-11 02:21:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:52,347 INFO L481 AbstractCegarLoop]: Abstraction has 388 states and 494 transitions. [2021-10-11 02:21:52,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 494 transitions. [2021-10-11 02:21:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-11 02:21:52,348 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:52,348 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:52,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2021-10-11 02:21:52,563 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:52,563 INFO L82 PathProgramCache]: Analyzing trace with hash 596801484, now seen corresponding path program 1 times [2021-10-11 02:21:52,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:52,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178051491] [2021-10-11 02:21:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:52,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:21:52,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:52,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:52,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178051491] [2021-10-11 02:21:52,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [164599342] [2021-10-11 02:21:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2021-10-11 02:21:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:53,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:21:53,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:53,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:53,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494460878] [2021-10-11 02:21:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:53,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:21:53,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:53,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:53,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-11 02:21:53,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-11 02:21:53,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835313393] [2021-10-11 02:21:53,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:21:53,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:21:53,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:21:53,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:21:53,512 INFO L87 Difference]: Start difference. First operand 388 states and 494 transitions. Second operand 10 states. [2021-10-11 02:21:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:57,071 INFO L93 Difference]: Finished difference Result 1895 states and 2440 transitions. [2021-10-11 02:21:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-11 02:21:57,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-10-11 02:21:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:57,080 INFO L225 Difference]: With dead ends: 1895 [2021-10-11 02:21:57,080 INFO L226 Difference]: Without dead ends: 1559 [2021-10-11 02:21:57,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2021-10-11 02:21:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2021-10-11 02:21:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 524. [2021-10-11 02:21:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2021-10-11 02:21:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 686 transitions. [2021-10-11 02:21:57,185 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 686 transitions. Word has length 53 [2021-10-11 02:21:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:57,186 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 686 transitions. [2021-10-11 02:21:57,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:21:57,186 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 686 transitions. [2021-10-11 02:21:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-11 02:21:57,188 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:57,188 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:57,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:57,795 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1994887391, now seen corresponding path program 2 times [2021-10-11 02:21:57,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:21:57,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109020700] [2021-10-11 02:21:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2021-10-11 02:21:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:59,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:00,022 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:00,303 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-11 02:22:00,303 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:00,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2021-10-11 02:22:00,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:00 BoogieIcfgContainer [2021-10-11 02:22:00,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:00,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:00,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:00,732 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:00,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:40" (3/4) ... [2021-10-11 02:22:00,734 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:22:00,901 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcd97f28-4833-469b-99e3-83f7c223463b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:00,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:00,904 INFO L168 Benchmark]: Toolchain (without parser) took 23371.74 ms. Allocated memory was 71.3 MB in the beginning and 161.5 MB in the end (delta: 90.2 MB). Free memory was 55.0 MB in the beginning and 54.6 MB in the end (delta: 400.6 kB). Peak memory consumption was 89.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:00,904 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 71.3 MB. Free memory is still 53.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:00,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.37 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 38.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:00,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.09 ms. Allocated memory is still 71.3 MB. Free memory was 38.6 MB in the beginning and 34.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:00,905 INFO L168 Benchmark]: Boogie Preprocessor took 79.54 ms. Allocated memory is still 71.3 MB. Free memory was 34.6 MB in the beginning and 31.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:00,906 INFO L168 Benchmark]: RCFGBuilder took 2469.60 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 31.7 MB in the beginning and 57.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:00,906 INFO L168 Benchmark]: TraceAbstraction took 19844.87 ms. Allocated memory was 90.2 MB in the beginning and 161.5 MB in the end (delta: 71.3 MB). Free memory was 56.9 MB in the beginning and 82.9 MB in the end (delta: -25.9 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:00,907 INFO L168 Benchmark]: Witness Printer took 170.19 ms. Allocated memory is still 161.5 MB. Free memory was 82.9 MB in the beginning and 54.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:00,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 71.3 MB. Free memory is still 53.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.37 ms. Allocated memory is still 71.3 MB. Free memory was 54.6 MB in the beginning and 38.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.09 ms. Allocated memory is still 71.3 MB. Free memory was 38.6 MB in the beginning and 34.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.54 ms. Allocated memory is still 71.3 MB. Free memory was 34.6 MB in the beginning and 31.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2469.60 ms. Allocated memory was 71.3 MB in the beginning and 90.2 MB in the end (delta: 18.9 MB). Free memory was 31.7 MB in the beginning and 57.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19844.87 ms. Allocated memory was 90.2 MB in the beginning and 161.5 MB in the end (delta: 71.3 MB). Free memory was 56.9 MB in the beginning and 82.9 MB in the end (delta: -25.9 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. * Witness Printer took 170.19 ms. Allocated memory is still 161.5 MB. Free memory was 82.9 MB in the beginning and 54.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L557] int pumpRunning = 0; [L558] int systemActive = 1; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L947] int retValue_acc ; [L950] retValue_acc = 1 [L951] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] int splverifierCounter ; [L856] int tmp ; [L857] int tmp___0 ; [L858] int tmp___1 ; [L859] int tmp___2 ; [L862] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L622] COND FALSE !(\read(pumpRunning)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE ! pumpRunning [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L840] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L843] COND FALSE !(waterLevel < 2) [L847] retValue_acc = 0 [L848] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] tmp = isHighWaterLevel() [L600] COND TRUE \read(tmp) [L652] int tmp ; [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L647] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L155] tmp = getWaterLevel() [L157] COND TRUE tmp == 0 [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] tmp___0 = isPumpRunning() [L161] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L545] 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, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.5s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1600 SDtfs, 2972 SDslu, 3224 SDs, 0 SdLazy, 557 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 772 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=524occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 2894 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 655 NumberOfCodeBlocks, 655 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 723 ConstructedInterpolants, 0 QuantifiedInterpolants, 100485 SizeOfPredicates, 37 NumberOfNonLiveVariables, 3508 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 72/126 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...