./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8 --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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:49:33,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:49:33,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:49:33,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:49:33,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:49:33,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:49:33,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:49:33,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:49:33,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:49:33,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:49:33,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:49:33,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:49:33,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:49:33,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:49:33,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:49:33,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:49:33,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:49:33,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:49:33,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:49:33,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:49:33,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:49:33,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:49:33,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:49:33,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:49:33,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:49:33,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:49:33,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:49:33,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:49:33,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:49:33,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:49:33,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:49:33,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:49:33,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:49:33,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:49:33,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:49:33,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:49:33,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:49:33,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:49:33,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:49:33,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:49:33,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:49:33,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:49:33,955 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:49:33,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:49:33,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:49:33,957 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:49:33,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:49:33,958 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:49:33,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:49:33,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:49:33,959 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:49:33,959 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:49:33,960 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:49:33,961 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:49:33,961 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:49:33,961 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:49:33,961 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:49:33,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:49:33,963 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:49:33,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:49:33,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:49:33,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:49:33,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:49:33,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:49:33,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:49:33,965 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:49:33,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:49:33,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:49:33,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:49:33,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:49:33,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:49:33,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:49:33,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:33,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:49:33,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:49:33,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:49:33,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:49:33,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:49:33,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:49:33,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:49:33,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:49:33,972 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_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2021-11-07 01:49:34,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:49:34,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:49:34,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:49:34,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:49:34,400 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:49:34,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-07 01:49:34,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/81ce41fda/3ff565f53cb34287b7cac569d3fe150e/FLAGcee37a230 [2021-11-07 01:49:35,198 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:49:35,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-07 01:49:35,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/81ce41fda/3ff565f53cb34287b7cac569d3fe150e/FLAGcee37a230 [2021-11-07 01:49:35,324 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/81ce41fda/3ff565f53cb34287b7cac569d3fe150e [2021-11-07 01:49:35,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:49:35,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:49:35,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:35,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:49:35,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:49:35,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:35" (1/1) ... [2021-11-07 01:49:35,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1880d16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:35, skipping insertion in model container [2021-11-07 01:49:35,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:35" (1/1) ... [2021-11-07 01:49:35,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:49:35,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:35,907 WARN L228 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_87f28870-5ae0-4c2d-92f0-825c12b242a7/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-07 01:49:36,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:36,230 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) [2021-11-07 01:49:36,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3633c6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:36, skipping insertion in model container [2021-11-07 01:49:36,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:36,232 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:49:36,235 INFO L168 Benchmark]: Toolchain (without parser) took 901.23 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 47.2 MB in the beginning and 74.1 MB in the end (delta: -26.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:49:36,236 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:49:36,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 897.70 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 46.9 MB in the beginning and 74.1 MB in the end (delta: -27.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:49:36,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 66.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 897.70 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 46.9 MB in the beginning and 74.1 MB in the end (delta: -27.1 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 880]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8 --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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:49:38,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:49:38,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:49:38,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:49:38,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:49:38,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:49:38,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:49:38,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:49:38,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:49:38,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:49:38,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:49:38,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:49:38,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:49:38,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:49:38,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:49:38,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:49:38,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:49:38,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:49:38,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:49:38,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:49:38,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:49:38,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:49:38,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:49:38,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:49:38,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:49:38,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:49:38,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:49:38,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:49:38,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:49:38,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:49:38,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:49:38,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:49:38,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:49:38,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:49:38,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:49:38,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:49:38,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:49:38,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:49:38,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:49:38,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:49:38,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:49:38,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:49:38,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:49:38,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:49:38,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:49:38,754 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:49:38,754 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:49:38,754 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:49:38,754 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:49:38,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:49:38,755 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:49:38,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:49:38,758 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:49:38,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:49:38,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:49:38,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:49:38,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:49:38,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:49:38,759 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:49:38,760 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:49:38,760 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:49:38,760 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:49:38,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:49:38,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:49:38,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:49:38,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:49:38,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:49:38,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:49:38,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:38,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:49:38,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:49:38,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:49:38,763 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:49:38,763 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:49:38,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:49:38,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:49:38,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:49:38,764 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_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2021-11-07 01:49:39,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:49:39,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:49:39,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:49:39,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:49:39,215 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:49:39,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-07 01:49:39,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/bb5efdc4f/f9d079d4ed3146e393030a3cf1872189/FLAG68c4d55b0 [2021-11-07 01:49:40,218 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:49:40,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2021-11-07 01:49:40,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/bb5efdc4f/f9d079d4ed3146e393030a3cf1872189/FLAG68c4d55b0 [2021-11-07 01:49:40,315 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/data/bb5efdc4f/f9d079d4ed3146e393030a3cf1872189 [2021-11-07 01:49:40,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:49:40,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:49:40,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:40,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:49:40,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:49:40,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:40" (1/1) ... [2021-11-07 01:49:40,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d916694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:40, skipping insertion in model container [2021-11-07 01:49:40,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:49:40" (1/1) ... [2021-11-07 01:49:40,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:49:40,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:40,927 WARN L228 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_87f28870-5ae0-4c2d-92f0-825c12b242a7/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-07 01:49:41,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:41,212 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:49:41,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:49:41,273 WARN L228 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_87f28870-5ae0-4c2d-92f0-825c12b242a7/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-07 01:49:41,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:41,347 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:49:41,393 WARN L228 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_87f28870-5ae0-4c2d-92f0-825c12b242a7/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2021-11-07 01:49:41,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:49:41,539 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:49:41,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41 WrapperNode [2021-11-07 01:49:41,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:49:41,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:49:41,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:49:41,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:49:41,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:49:41,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:49:41,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:49:41,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:49:41,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:49:41,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:49:41,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:49:41,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:49:41,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (1/1) ... [2021-11-07 01:49:41,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:49:42,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:49:42,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:49:42,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:49:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:49:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:49:42,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:49:42,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:49:51,009 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:49:51,010 INFO L299 CfgBuilder]: Removed 517 assume(true) statements. [2021-11-07 01:49:51,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:49:51 BoogieIcfgContainer [2021-11-07 01:49:51,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:49:51,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:49:51,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:49:51,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:49:51,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:49:40" (1/3) ... [2021-11-07 01:49:51,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8898dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:49:51, skipping insertion in model container [2021-11-07 01:49:51,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:49:41" (2/3) ... [2021-11-07 01:49:51,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8898dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:49:51, skipping insertion in model container [2021-11-07 01:49:51,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:49:51" (3/3) ... [2021-11-07 01:49:51,031 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2021-11-07 01:49:51,038 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:49:51,038 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:49:51,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:49:51,114 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:49:51,115 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:49:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 2304 states, 2298 states have (on average 1.8986074847693646) internal successors, (4363), 2303 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 01:49:51,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:51,218 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:51,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:49:51,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:51,225 INFO L85 PathProgramCache]: Analyzing trace with hash 245285468, now seen corresponding path program 1 times [2021-11-07 01:49:51,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:51,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524111852] [2021-11-07 01:49:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:51,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:51,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:51,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:51,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:49:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:51,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:49:51,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:51,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:52,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:52,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524111852] [2021-11-07 01:49:52,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524111852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:52,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:52,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:49:52,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100963628] [2021-11-07 01:49:52,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:49:52,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:49:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:49:52,148 INFO L87 Difference]: Start difference. First operand has 2304 states, 2298 states have (on average 1.8986074847693646) internal successors, (4363), 2303 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:52,270 INFO L93 Difference]: Finished difference Result 2323 states and 4386 transitions. [2021-11-07 01:49:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:49:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 01:49:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:52,313 INFO L225 Difference]: With dead ends: 2323 [2021-11-07 01:49:52,314 INFO L226 Difference]: Without dead ends: 2300 [2021-11-07 01:49:52,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:49:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-11-07 01:49:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2021-11-07 01:49:52,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2295 states have (on average 1.8958605664488017) internal successors, (4351), 2299 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 4351 transitions. [2021-11-07 01:49:52,492 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 4351 transitions. Word has length 44 [2021-11-07 01:49:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:52,493 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 4351 transitions. [2021-11-07 01:49:52,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 4351 transitions. [2021-11-07 01:49:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-07 01:49:52,497 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:52,498 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:52,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:52,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:52,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:49:52,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash -671159509, now seen corresponding path program 1 times [2021-11-07 01:49:52,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:52,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793283698] [2021-11-07 01:49:52,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:52,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:52,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:52,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:52,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:49:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:53,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:49:53,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:53,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:53,550 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:53,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793283698] [2021-11-07 01:49:53,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793283698] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:53,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:53,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:49:53,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024745335] [2021-11-07 01:49:53,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:49:53,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:49:53,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:49:53,559 INFO L87 Difference]: Start difference. First operand 2300 states and 4351 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:53,778 INFO L93 Difference]: Finished difference Result 4587 states and 8683 transitions. [2021-11-07 01:49:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:49:53,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-07 01:49:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:53,796 INFO L225 Difference]: With dead ends: 4587 [2021-11-07 01:49:53,796 INFO L226 Difference]: Without dead ends: 2300 [2021-11-07 01:49:53,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:49:53,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2021-11-07 01:49:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2021-11-07 01:49:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2295 states have (on average 1.8932461873638344) internal successors, (4345), 2299 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 4345 transitions. [2021-11-07 01:49:53,899 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 4345 transitions. Word has length 46 [2021-11-07 01:49:53,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:53,900 INFO L470 AbstractCegarLoop]: Abstraction has 2300 states and 4345 transitions. [2021-11-07 01:49:53,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:53,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 4345 transitions. [2021-11-07 01:49:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:49:53,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:53,913 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:53,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:54,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:54,130 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:49:54,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:54,131 INFO L85 PathProgramCache]: Analyzing trace with hash 895862581, now seen corresponding path program 1 times [2021-11-07 01:49:54,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:54,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474318289] [2021-11-07 01:49:54,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:54,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:54,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:54,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:49:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:54,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:49:54,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:54,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:54,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:54,920 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:54,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474318289] [2021-11-07 01:49:54,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474318289] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:54,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:54,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:49:54,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231661342] [2021-11-07 01:49:54,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:49:54,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:49:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:49:54,924 INFO L87 Difference]: Start difference. First operand 2300 states and 4345 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:55,172 INFO L93 Difference]: Finished difference Result 4551 states and 8606 transitions. [2021-11-07 01:49:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:49:55,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:49:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:55,194 INFO L225 Difference]: With dead ends: 4551 [2021-11-07 01:49:55,194 INFO L226 Difference]: Without dead ends: 2273 [2021-11-07 01:49:55,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:49:55,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2021-11-07 01:49:55,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2021-11-07 01:49:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.8910934744268078) internal successors, (4289), 2272 states have internal predecessors, (4289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4289 transitions. [2021-11-07 01:49:55,298 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4289 transitions. Word has length 51 [2021-11-07 01:49:55,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:55,298 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 4289 transitions. [2021-11-07 01:49:55,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4289 transitions. [2021-11-07 01:49:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 01:49:55,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:55,302 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:55,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:55,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:55,519 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:49:55,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash 583980247, now seen corresponding path program 1 times [2021-11-07 01:49:55,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:55,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827713117] [2021-11-07 01:49:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:55,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:55,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:55,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:55,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:49:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:56,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:49:56,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:56,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:56,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:56,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827713117] [2021-11-07 01:49:56,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827713117] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:56,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:56,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:49:56,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182645344] [2021-11-07 01:49:56,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:49:56,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:49:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:49:56,415 INFO L87 Difference]: Start difference. First operand 2273 states and 4289 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:56,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:56,574 INFO L93 Difference]: Finished difference Result 4524 states and 8550 transitions. [2021-11-07 01:49:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:49:56,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 01:49:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:56,592 INFO L225 Difference]: With dead ends: 4524 [2021-11-07 01:49:56,593 INFO L226 Difference]: Without dead ends: 2273 [2021-11-07 01:49:56,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:49:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2021-11-07 01:49:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2021-11-07 01:49:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 2268 states have (on average 1.8884479717813052) internal successors, (4283), 2272 states have internal predecessors, (4283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4283 transitions. [2021-11-07 01:49:56,766 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4283 transitions. Word has length 52 [2021-11-07 01:49:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:56,766 INFO L470 AbstractCegarLoop]: Abstraction has 2273 states and 4283 transitions. [2021-11-07 01:49:56,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:56,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4283 transitions. [2021-11-07 01:49:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 01:49:56,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:56,769 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:56,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:56,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:56,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:49:56,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash 967827432, now seen corresponding path program 1 times [2021-11-07 01:49:56,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:56,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815047174] [2021-11-07 01:49:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:56,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:56,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:57,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:49:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:57,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:49:57,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:57,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:57,735 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:57,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815047174] [2021-11-07 01:49:57,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815047174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:57,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:57,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:49:57,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336890446] [2021-11-07 01:49:57,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:49:57,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:57,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:49:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:49:57,738 INFO L87 Difference]: Start difference. First operand 2273 states and 4283 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:57,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:49:57,950 INFO L93 Difference]: Finished difference Result 4518 states and 8533 transitions. [2021-11-07 01:49:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:49:57,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-07 01:49:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:49:57,966 INFO L225 Difference]: With dead ends: 4518 [2021-11-07 01:49:57,966 INFO L226 Difference]: Without dead ends: 2270 [2021-11-07 01:49:57,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:49:57,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2021-11-07 01:49:58,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2270. [2021-11-07 01:49:58,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2265 states have (on average 1.8874172185430464) internal successors, (4275), 2269 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 4275 transitions. [2021-11-07 01:49:58,074 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 4275 transitions. Word has length 57 [2021-11-07 01:49:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:49:58,075 INFO L470 AbstractCegarLoop]: Abstraction has 2270 states and 4275 transitions. [2021-11-07 01:49:58,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:49:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 4275 transitions. [2021-11-07 01:49:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:49:58,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:49:58,079 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:49:58,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:49:58,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:49:58,293 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:49:58,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:49:58,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1508689336, now seen corresponding path program 1 times [2021-11-07 01:49:58,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:49:58,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18308340] [2021-11-07 01:49:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:49:58,296 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:49:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:49:58,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:49:58,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:49:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:49:58,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:49:58,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:49:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:58,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:49:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:49:59,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:49:59,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18308340] [2021-11-07 01:49:59,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18308340] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:49:59,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:49:59,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:49:59,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099448212] [2021-11-07 01:49:59,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:49:59,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:49:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:49:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:49:59,200 INFO L87 Difference]: Start difference. First operand 2270 states and 4275 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:01,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:01,004 INFO L93 Difference]: Finished difference Result 8236 states and 15579 transitions. [2021-11-07 01:50:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:50:01,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-07 01:50:01,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:01,044 INFO L225 Difference]: With dead ends: 8236 [2021-11-07 01:50:01,044 INFO L226 Difference]: Without dead ends: 5997 [2021-11-07 01:50:01,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:50:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5997 states. [2021-11-07 01:50:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5997 to 2270. [2021-11-07 01:50:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2265 states have (on average 1.8423841059602648) internal successors, (4173), 2269 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 4173 transitions. [2021-11-07 01:50:01,241 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 4173 transitions. Word has length 58 [2021-11-07 01:50:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:01,242 INFO L470 AbstractCegarLoop]: Abstraction has 2270 states and 4173 transitions. [2021-11-07 01:50:01,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 4173 transitions. [2021-11-07 01:50:01,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 01:50:01,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:01,244 INFO L513 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, 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] [2021-11-07 01:50:01,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:01,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:01,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1712031068, now seen corresponding path program 1 times [2021-11-07 01:50:01,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:01,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295888665] [2021-11-07 01:50:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:01,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:01,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:01,463 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:01,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:50:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:01,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:50:01,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:02,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:02,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:02,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295888665] [2021-11-07 01:50:02,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295888665] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:02,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:02,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:50:02,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841512669] [2021-11-07 01:50:02,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:50:02,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:50:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:50:02,368 INFO L87 Difference]: Start difference. First operand 2270 states and 4173 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:03,653 INFO L93 Difference]: Finished difference Result 6329 states and 11766 transitions. [2021-11-07 01:50:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:50:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 01:50:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:03,709 INFO L225 Difference]: With dead ends: 6329 [2021-11-07 01:50:03,710 INFO L226 Difference]: Without dead ends: 4108 [2021-11-07 01:50:03,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:50:03,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-11-07 01:50:03,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 2236. [2021-11-07 01:50:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2236 states, 2231 states have (on average 1.842671447781264) internal successors, (4111), 2235 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 4111 transitions. [2021-11-07 01:50:03,871 INFO L78 Accepts]: Start accepts. Automaton has 2236 states and 4111 transitions. Word has length 66 [2021-11-07 01:50:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:03,872 INFO L470 AbstractCegarLoop]: Abstraction has 2236 states and 4111 transitions. [2021-11-07 01:50:03,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2236 states and 4111 transitions. [2021-11-07 01:50:03,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 01:50:03,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:03,885 INFO L513 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, 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] [2021-11-07 01:50:03,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:04,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:04,101 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash -300682044, now seen corresponding path program 1 times [2021-11-07 01:50:04,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:04,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840884438] [2021-11-07 01:50:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:04,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:04,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:04,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:04,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:50:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:04,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:50:04,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:04,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:05,103 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:05,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840884438] [2021-11-07 01:50:05,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840884438] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:05,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:05,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:50:05,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578182249] [2021-11-07 01:50:05,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:50:05,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:05,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:50:05,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:50:05,105 INFO L87 Difference]: Start difference. First operand 2236 states and 4111 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:07,182 INFO L93 Difference]: Finished difference Result 8850 states and 16397 transitions. [2021-11-07 01:50:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:50:07,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 01:50:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:07,208 INFO L225 Difference]: With dead ends: 8850 [2021-11-07 01:50:07,208 INFO L226 Difference]: Without dead ends: 6662 [2021-11-07 01:50:07,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:50:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6662 states. [2021-11-07 01:50:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6662 to 2240. [2021-11-07 01:50:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2235 states have (on average 1.8411633109619687) internal successors, (4115), 2239 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 4115 transitions. [2021-11-07 01:50:07,465 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 4115 transitions. Word has length 68 [2021-11-07 01:50:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:07,466 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 4115 transitions. [2021-11-07 01:50:07,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:07,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 4115 transitions. [2021-11-07 01:50:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 01:50:07,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:07,470 INFO L513 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, 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, 1] [2021-11-07 01:50:07,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:07,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:07,685 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:07,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:07,686 INFO L85 PathProgramCache]: Analyzing trace with hash -44149649, now seen corresponding path program 1 times [2021-11-07 01:50:07,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:07,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458799060] [2021-11-07 01:50:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:07,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:07,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:07,689 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:07,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:50:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:08,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:50:08,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:08,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:08,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:08,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:08,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458799060] [2021-11-07 01:50:08,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458799060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:08,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:08,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:50:08,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297770686] [2021-11-07 01:50:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:50:08,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:08,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:50:08,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:50:08,755 INFO L87 Difference]: Start difference. First operand 2240 states and 4115 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:10,210 INFO L93 Difference]: Finished difference Result 6222 states and 11498 transitions. [2021-11-07 01:50:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:50:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 01:50:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:10,220 INFO L225 Difference]: With dead ends: 6222 [2021-11-07 01:50:10,221 INFO L226 Difference]: Without dead ends: 4017 [2021-11-07 01:50:10,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:50:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2021-11-07 01:50:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 3062. [2021-11-07 01:50:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 3057 states have (on average 1.8263002944062807) internal successors, (5583), 3061 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 5583 transitions. [2021-11-07 01:50:10,377 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 5583 transitions. Word has length 69 [2021-11-07 01:50:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:10,377 INFO L470 AbstractCegarLoop]: Abstraction has 3062 states and 5583 transitions. [2021-11-07 01:50:10,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 5583 transitions. [2021-11-07 01:50:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:50:10,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:10,379 INFO L513 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, 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, 1, 1, 1] [2021-11-07 01:50:10,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:10,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:10,601 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash 347223289, now seen corresponding path program 1 times [2021-11-07 01:50:10,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:10,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566947320] [2021-11-07 01:50:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:10,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:10,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:10,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:10,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:50:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:11,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:50:11,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:11,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:11,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:11,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566947320] [2021-11-07 01:50:11,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566947320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:11,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:11,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:50:11,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864720836] [2021-11-07 01:50:11,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:50:11,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:50:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:50:11,596 INFO L87 Difference]: Start difference. First operand 3062 states and 5583 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:12,468 INFO L93 Difference]: Finished difference Result 22139 states and 40657 transitions. [2021-11-07 01:50:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:50:12,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:50:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:12,586 INFO L225 Difference]: With dead ends: 22139 [2021-11-07 01:50:12,587 INFO L226 Difference]: Without dead ends: 19121 [2021-11-07 01:50:12,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:50:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19121 states. [2021-11-07 01:50:12,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19121 to 5644. [2021-11-07 01:50:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5644 states, 5639 states have (on average 1.83844653307324) internal successors, (10367), 5643 states have internal predecessors, (10367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 10367 transitions. [2021-11-07 01:50:13,023 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 10367 transitions. Word has length 71 [2021-11-07 01:50:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:13,024 INFO L470 AbstractCegarLoop]: Abstraction has 5644 states and 10367 transitions. [2021-11-07 01:50:13,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 10367 transitions. [2021-11-07 01:50:13,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:50:13,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:13,026 INFO L513 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, 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, 1, 1, 1] [2021-11-07 01:50:13,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:13,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:13,241 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 621982903, now seen corresponding path program 1 times [2021-11-07 01:50:13,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:13,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458531914] [2021-11-07 01:50:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:13,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:13,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:13,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:50:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:13,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:50:13,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:14,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:14,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:14,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458531914] [2021-11-07 01:50:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458531914] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:14,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:14,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:50:14,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778775194] [2021-11-07 01:50:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:50:14,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:50:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:50:14,432 INFO L87 Difference]: Start difference. First operand 5644 states and 10367 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:15,464 INFO L93 Difference]: Finished difference Result 10233 states and 18710 transitions. [2021-11-07 01:50:15,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:50:15,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:50:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:15,487 INFO L225 Difference]: With dead ends: 10233 [2021-11-07 01:50:15,487 INFO L226 Difference]: Without dead ends: 7767 [2021-11-07 01:50:15,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:50:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7767 states. [2021-11-07 01:50:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7767 to 5634. [2021-11-07 01:50:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5634 states, 5629 states have (on average 1.8381595310001777) internal successors, (10347), 5633 states have internal predecessors, (10347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5634 states to 5634 states and 10347 transitions. [2021-11-07 01:50:15,841 INFO L78 Accepts]: Start accepts. Automaton has 5634 states and 10347 transitions. Word has length 71 [2021-11-07 01:50:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:15,842 INFO L470 AbstractCegarLoop]: Abstraction has 5634 states and 10347 transitions. [2021-11-07 01:50:15,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5634 states and 10347 transitions. [2021-11-07 01:50:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 01:50:15,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:15,845 INFO L513 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, 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, 1, 1, 1, 1, 1] [2021-11-07 01:50:15,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:16,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:16,069 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:16,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1817580291, now seen corresponding path program 1 times [2021-11-07 01:50:16,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:16,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274592790] [2021-11-07 01:50:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:16,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:16,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:16,072 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:16,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:50:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:16,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:50:16,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:16,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:17,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:17,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274592790] [2021-11-07 01:50:17,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274592790] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:17,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:17,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:50:17,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283438211] [2021-11-07 01:50:17,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:50:17,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:17,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:50:17,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:50:17,282 INFO L87 Difference]: Start difference. First operand 5634 states and 10347 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:18,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:18,074 INFO L93 Difference]: Finished difference Result 17162 states and 31584 transitions. [2021-11-07 01:50:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:50:18,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 01:50:18,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:18,105 INFO L225 Difference]: With dead ends: 17162 [2021-11-07 01:50:18,105 INFO L226 Difference]: Without dead ends: 14702 [2021-11-07 01:50:18,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:50:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14702 states. [2021-11-07 01:50:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14702 to 7833. [2021-11-07 01:50:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7833 states, 7828 states have (on average 1.831374552887072) internal successors, (14336), 7832 states have internal predecessors, (14336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7833 states to 7833 states and 14336 transitions. [2021-11-07 01:50:18,835 INFO L78 Accepts]: Start accepts. Automaton has 7833 states and 14336 transitions. Word has length 73 [2021-11-07 01:50:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:18,835 INFO L470 AbstractCegarLoop]: Abstraction has 7833 states and 14336 transitions. [2021-11-07 01:50:18,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7833 states and 14336 transitions. [2021-11-07 01:50:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:50:18,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:18,839 INFO L513 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, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:18,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:19,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:19,061 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:19,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1493535569, now seen corresponding path program 1 times [2021-11-07 01:50:19,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:19,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95604624] [2021-11-07 01:50:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:19,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:19,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:19,065 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:19,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:50:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:19,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:50:19,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:20,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:20,628 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:20,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95604624] [2021-11-07 01:50:20,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95604624] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:20,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:20,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:50:20,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99154950] [2021-11-07 01:50:20,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:50:20,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:20,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:50:20,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:50:20,630 INFO L87 Difference]: Start difference. First operand 7833 states and 14336 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:23,411 INFO L93 Difference]: Finished difference Result 34434 states and 63435 transitions. [2021-11-07 01:50:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:50:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 01:50:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:23,476 INFO L225 Difference]: With dead ends: 34434 [2021-11-07 01:50:23,476 INFO L226 Difference]: Without dead ends: 29775 [2021-11-07 01:50:23,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:50:23,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29775 states. [2021-11-07 01:50:24,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29775 to 11363. [2021-11-07 01:50:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11363 states, 11358 states have (on average 1.8403768269061453) internal successors, (20903), 11362 states have internal predecessors, (20903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 20903 transitions. [2021-11-07 01:50:24,739 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 20903 transitions. Word has length 75 [2021-11-07 01:50:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:24,740 INFO L470 AbstractCegarLoop]: Abstraction has 11363 states and 20903 transitions. [2021-11-07 01:50:24,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 20903 transitions. [2021-11-07 01:50:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:50:24,748 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:24,748 INFO L513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:24,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:24,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:24,964 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash 155626734, now seen corresponding path program 1 times [2021-11-07 01:50:24,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:24,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760794855] [2021-11-07 01:50:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:24,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:24,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:24,967 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:24,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:50:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:25,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:50:25,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:25,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:26,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:26,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760794855] [2021-11-07 01:50:26,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760794855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:26,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:26,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:50:26,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944577298] [2021-11-07 01:50:26,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:50:26,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:50:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:50:26,131 INFO L87 Difference]: Start difference. First operand 11363 states and 20903 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:26,815 INFO L93 Difference]: Finished difference Result 19684 states and 36080 transitions. [2021-11-07 01:50:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:50:26,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:50:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:26,834 INFO L225 Difference]: With dead ends: 19684 [2021-11-07 01:50:26,834 INFO L226 Difference]: Without dead ends: 11378 [2021-11-07 01:50:26,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:50:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11378 states. [2021-11-07 01:50:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11378 to 11363. [2021-11-07 01:50:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11363 states, 11358 states have (on average 1.8306920232435289) internal successors, (20793), 11362 states have internal predecessors, (20793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 20793 transitions. [2021-11-07 01:50:27,740 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 20793 transitions. Word has length 82 [2021-11-07 01:50:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:27,740 INFO L470 AbstractCegarLoop]: Abstraction has 11363 states and 20793 transitions. [2021-11-07 01:50:27,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 20793 transitions. [2021-11-07 01:50:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:50:27,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:27,745 INFO L513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:27,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:27,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:27,961 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1233251158, now seen corresponding path program 1 times [2021-11-07 01:50:27,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:27,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909426803] [2021-11-07 01:50:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:27,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:27,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:27,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 01:50:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:28,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:50:28,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:29,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:29,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:29,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909426803] [2021-11-07 01:50:29,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909426803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:29,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:29,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:50:29,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111791529] [2021-11-07 01:50:29,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:50:29,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:50:29,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:50:29,604 INFO L87 Difference]: Start difference. First operand 11363 states and 20793 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:31,921 INFO L93 Difference]: Finished difference Result 29960 states and 54676 transitions. [2021-11-07 01:50:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:50:31,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 01:50:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:31,955 INFO L225 Difference]: With dead ends: 29960 [2021-11-07 01:50:31,956 INFO L226 Difference]: Without dead ends: 21992 [2021-11-07 01:50:31,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:50:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21992 states. [2021-11-07 01:50:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21992 to 9931. [2021-11-07 01:50:32,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9931 states, 9926 states have (on average 1.8191617973000203) internal successors, (18057), 9930 states have internal predecessors, (18057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9931 states to 9931 states and 18057 transitions. [2021-11-07 01:50:32,865 INFO L78 Accepts]: Start accepts. Automaton has 9931 states and 18057 transitions. Word has length 83 [2021-11-07 01:50:32,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:32,866 INFO L470 AbstractCegarLoop]: Abstraction has 9931 states and 18057 transitions. [2021-11-07 01:50:32,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9931 states and 18057 transitions. [2021-11-07 01:50:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:50:32,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:32,871 INFO L513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:32,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:33,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:33,081 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash 222133908, now seen corresponding path program 1 times [2021-11-07 01:50:33,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:33,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [426611412] [2021-11-07 01:50:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:33,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:33,084 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:33,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 01:50:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:34,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:50:34,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:34,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:34,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:34,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:34,732 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:34,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [426611412] [2021-11-07 01:50:34,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [426611412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:34,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:34,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-07 01:50:34,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322121423] [2021-11-07 01:50:34,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:50:34,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:34,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:50:34,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:50:34,735 INFO L87 Difference]: Start difference. First operand 9931 states and 18057 transitions. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:45,957 INFO L93 Difference]: Finished difference Result 62599 states and 112632 transitions. [2021-11-07 01:50:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:50:45,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 01:50:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:46,029 INFO L225 Difference]: With dead ends: 62599 [2021-11-07 01:50:46,029 INFO L226 Difference]: Without dead ends: 54166 [2021-11-07 01:50:46,046 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=285, Invalid=905, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 01:50:46,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54166 states. [2021-11-07 01:50:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54166 to 21940. [2021-11-07 01:50:47,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21940 states, 21935 states have (on average 1.8133576475951676) internal successors, (39776), 21939 states have internal predecessors, (39776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21940 states to 21940 states and 39776 transitions. [2021-11-07 01:50:47,820 INFO L78 Accepts]: Start accepts. Automaton has 21940 states and 39776 transitions. Word has length 83 [2021-11-07 01:50:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:47,821 INFO L470 AbstractCegarLoop]: Abstraction has 21940 states and 39776 transitions. [2021-11-07 01:50:47,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 9 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 21940 states and 39776 transitions. [2021-11-07 01:50:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:50:47,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:47,825 INFO L513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:47,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:48,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:48,056 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2083326843, now seen corresponding path program 1 times [2021-11-07 01:50:48,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:48,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912057941] [2021-11-07 01:50:48,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:48,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:48,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:48,060 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:48,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 01:50:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:48,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:50:48,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:49,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:49,613 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:49,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912057941] [2021-11-07 01:50:49,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912057941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:49,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:49,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:50:49,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190381119] [2021-11-07 01:50:49,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:50:49,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:50:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:49,616 INFO L87 Difference]: Start difference. First operand 21940 states and 39776 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:50:52,331 INFO L93 Difference]: Finished difference Result 63854 states and 115827 transitions. [2021-11-07 01:50:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:50:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 01:50:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:50:52,388 INFO L225 Difference]: With dead ends: 63854 [2021-11-07 01:50:52,388 INFO L226 Difference]: Without dead ends: 43432 [2021-11-07 01:50:52,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:50:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43432 states. [2021-11-07 01:50:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43432 to 43430. [2021-11-07 01:50:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43430 states, 43425 states have (on average 1.815152561888313) internal successors, (78823), 43429 states have internal predecessors, (78823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43430 states to 43430 states and 78823 transitions. [2021-11-07 01:50:55,107 INFO L78 Accepts]: Start accepts. Automaton has 43430 states and 78823 transitions. Word has length 84 [2021-11-07 01:50:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:50:55,108 INFO L470 AbstractCegarLoop]: Abstraction has 43430 states and 78823 transitions. [2021-11-07 01:50:55,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:50:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 43430 states and 78823 transitions. [2021-11-07 01:50:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:50:55,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:50:55,114 INFO L513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:50:55,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:50:55,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:50:55,334 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:50:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:50:55,334 INFO L85 PathProgramCache]: Analyzing trace with hash 210028573, now seen corresponding path program 1 times [2021-11-07 01:50:55,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:50:55,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429749605] [2021-11-07 01:50:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:50:55,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:50:55,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:50:55,337 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:50:55,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 01:50:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:50:56,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:50:56,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:50:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:56,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:50:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:50:57,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:50:57,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429749605] [2021-11-07 01:50:57,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429749605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:50:57,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:50:57,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:50:57,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093362711] [2021-11-07 01:50:57,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:50:57,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:50:57,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:50:57,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:50:57,357 INFO L87 Difference]: Start difference. First operand 43430 states and 78823 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:03,284 INFO L93 Difference]: Finished difference Result 63325 states and 115133 transitions. [2021-11-07 01:51:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:51:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 01:51:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:03,358 INFO L225 Difference]: With dead ends: 63325 [2021-11-07 01:51:03,358 INFO L226 Difference]: Without dead ends: 63308 [2021-11-07 01:51:03,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:51:03,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63308 states. [2021-11-07 01:51:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63308 to 49961. [2021-11-07 01:51:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49961 states, 49956 states have (on average 1.8166386420049643) internal successors, (90752), 49960 states have internal predecessors, (90752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:06,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49961 states to 49961 states and 90752 transitions. [2021-11-07 01:51:06,445 INFO L78 Accepts]: Start accepts. Automaton has 49961 states and 90752 transitions. Word has length 85 [2021-11-07 01:51:06,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:06,446 INFO L470 AbstractCegarLoop]: Abstraction has 49961 states and 90752 transitions. [2021-11-07 01:51:06,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 49961 states and 90752 transitions. [2021-11-07 01:51:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:51:06,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:06,450 INFO L513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:51:06,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:06,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:06,665 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:51:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash -204233416, now seen corresponding path program 1 times [2021-11-07 01:51:06,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:06,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110823832] [2021-11-07 01:51:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:06,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:06,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:06,666 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:06,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 01:51:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:07,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:51:07,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:07,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:08,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:08,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110823832] [2021-11-07 01:51:08,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110823832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:08,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:08,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:51:08,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743311827] [2021-11-07 01:51:08,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:51:08,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:08,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:51:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:51:08,017 INFO L87 Difference]: Start difference. First operand 49961 states and 90752 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:51:10,472 INFO L93 Difference]: Finished difference Result 49978 states and 90769 transitions. [2021-11-07 01:51:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:51:10,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 01:51:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:51:10,529 INFO L225 Difference]: With dead ends: 49978 [2021-11-07 01:51:10,530 INFO L226 Difference]: Without dead ends: 49961 [2021-11-07 01:51:10,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:51:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49961 states. [2021-11-07 01:51:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49961 to 49961. [2021-11-07 01:51:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49961 states, 49956 states have (on average 1.8157378493073906) internal successors, (90707), 49960 states have internal predecessors, (90707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49961 states to 49961 states and 90707 transitions. [2021-11-07 01:51:13,511 INFO L78 Accepts]: Start accepts. Automaton has 49961 states and 90707 transitions. Word has length 87 [2021-11-07 01:51:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:51:13,511 INFO L470 AbstractCegarLoop]: Abstraction has 49961 states and 90707 transitions. [2021-11-07 01:51:13,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:51:13,512 INFO L276 IsEmpty]: Start isEmpty. Operand 49961 states and 90707 transitions. [2021-11-07 01:51:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 01:51:13,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:51:13,517 INFO L513 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, 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, 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] [2021-11-07 01:51:13,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:51:13,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:51:13,723 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:51:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:51:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash -724961551, now seen corresponding path program 1 times [2021-11-07 01:51:13,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:51:13,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525542697] [2021-11-07 01:51:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:51:13,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:51:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:51:13,725 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:51:13,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f28870-5ae0-4c2d-92f0-825c12b242a7/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 01:51:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:51:14,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:51:14,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:51:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:14,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:51:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:51:15,241 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:51:15,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525542697] [2021-11-07 01:51:15,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525542697] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:51:15,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:51:15,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:51:15,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320152364] [2021-11-07 01:51:15,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:51:15,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:51:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:51:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:51:15,244 INFO L87 Difference]: Start difference. First operand 49961 states and 90707 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)