./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product42.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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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 23f15893fb26009b2882a55698a2d895d2e3e404fcbd45ba17e1cf64b2b2b34e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:06:15,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:06:15,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:06:15,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:06:15,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:06:15,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:06:15,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:06:15,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:06:15,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:06:15,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:06:15,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:06:15,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:06:15,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:06:15,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:06:15,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:06:15,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:06:15,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:06:15,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:06:15,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:06:15,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:06:15,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:06:15,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:06:15,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:06:15,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:06:15,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:06:15,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:06:15,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:06:15,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:06:15,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:06:15,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:06:15,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:06:15,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:06:15,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:06:15,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:06:15,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:06:15,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:06:15,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:06:15,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:06:15,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:06:15,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:06:15,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:06:15,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:06:15,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:06:15,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:06:15,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:06:15,449 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:06:15,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:06:15,449 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:06:15,449 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:06:15,450 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:06:15,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:06:15,450 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:06:15,452 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:06:15,452 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:06:15,453 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:06:15,453 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:06:15,453 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:06:15,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:06:15,455 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:06:15,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:06:15,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:06:15,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:06:15,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:06:15,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:06:15,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:06:15,457 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:06:15,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:06:15,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:06:15,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:06:15,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:06:15,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:06:15,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:06:15,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:15,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:06:15,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:06:15,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:06:15,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:06:15,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:06:15,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:06:15,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:06:15,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:06:15,463 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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f15893fb26009b2882a55698a2d895d2e3e404fcbd45ba17e1cf64b2b2b34e [2021-11-07 02:06:15,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:06:15,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:06:15,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:06:15,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:06:15,853 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:06:15,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2021-11-07 02:06:15,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/077428c13/886381f9511340d28768e2394ec18f2c/FLAG0fd478e9e [2021-11-07 02:06:16,483 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:06:16,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2021-11-07 02:06:16,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/077428c13/886381f9511340d28768e2394ec18f2c/FLAG0fd478e9e [2021-11-07 02:06:16,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/077428c13/886381f9511340d28768e2394ec18f2c [2021-11-07 02:06:16,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:06:16,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:06:16,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:16,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:06:16,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:06:16,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:16" (1/1) ... [2021-11-07 02:06:16,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714b48e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:16, skipping insertion in model container [2021-11-07 02:06:16,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:16" (1/1) ... [2021-11-07 02:06:16,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:06:16,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:17,343 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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[17055,17068] [2021-11-07 02:06:17,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:17,392 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 02:06:17,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72773a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:17, skipping insertion in model container [2021-11-07 02:06:17,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:17,397 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:06:17,404 INFO L168 Benchmark]: Toolchain (without parser) took 591.51 ms. Allocated memory is still 115.3 MB. Free memory was 84.4 MB in the beginning and 87.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:17,406 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 115.3 MB. Free memory was 69.2 MB in the beginning and 69.1 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:06:17,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.71 ms. Allocated memory is still 115.3 MB. Free memory was 84.1 MB in the beginning and 87.3 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:17,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 115.3 MB. Free memory was 69.2 MB in the beginning and 69.1 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 580.71 ms. Allocated memory is still 115.3 MB. Free memory was 84.1 MB in the beginning and 87.3 MB in the end (delta: -3.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 78]: 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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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 23f15893fb26009b2882a55698a2d895d2e3e404fcbd45ba17e1cf64b2b2b34e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:06:20,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:06:20,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:06:20,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:06:20,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:06:20,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:06:20,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:06:20,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:06:20,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:06:20,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:06:20,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:06:20,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:06:20,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:06:20,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:06:20,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:06:20,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:06:20,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:06:20,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:06:20,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:06:20,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:06:20,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:06:20,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:06:20,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:06:20,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:06:20,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:06:20,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:06:20,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:06:20,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:06:20,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:06:20,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:06:20,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:06:20,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:06:20,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:06:20,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:06:20,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:06:20,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:06:20,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:06:20,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:06:20,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:06:20,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:06:20,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:06:20,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:06:20,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:06:20,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:06:20,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:06:20,184 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:06:20,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:06:20,185 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:06:20,185 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:06:20,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:06:20,186 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:06:20,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:06:20,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:06:20,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:06:20,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:06:20,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:06:20,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:06:20,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:06:20,188 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:06:20,189 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:06:20,189 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:06:20,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:06:20,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:06:20,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:06:20,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:06:20,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:06:20,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:06:20,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:06:20,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:20,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:06:20,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:06:20,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:06:20,192 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:06:20,193 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:06:20,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:06:20,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:06:20,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:06:20,194 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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f15893fb26009b2882a55698a2d895d2e3e404fcbd45ba17e1cf64b2b2b34e [2021-11-07 02:06:20,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:06:20,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:06:20,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:06:20,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:06:20,648 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:06:20,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2021-11-07 02:06:20,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/9a65c1ed6/337706bdd6d7407fa69da7ec4503637e/FLAGafec541c1 [2021-11-07 02:06:21,372 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:06:21,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c [2021-11-07 02:06:21,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/9a65c1ed6/337706bdd6d7407fa69da7ec4503637e/FLAGafec541c1 [2021-11-07 02:06:21,654 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/data/9a65c1ed6/337706bdd6d7407fa69da7ec4503637e [2021-11-07 02:06:21,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:06:21,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:06:21,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:21,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:06:21,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:06:21,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:21" (1/1) ... [2021-11-07 02:06:21,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c76174b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:21, skipping insertion in model container [2021-11-07 02:06:21,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:06:21" (1/1) ... [2021-11-07 02:06:21,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:06:21,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:22,080 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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[17055,17068] [2021-11-07 02:06:22,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:22,117 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:06:22,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:06:22,250 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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[17055,17068] [2021-11-07 02:06:22,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:22,263 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:06:22,324 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_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/sv-benchmarks/c/product-lines/minepump_spec2_product42.cil.c[17055,17068] [2021-11-07 02:06:22,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:06:22,359 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:06:22,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22 WrapperNode [2021-11-07 02:06:22,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:06:22,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:06:22,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:06:22,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:06:22,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:06:22,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:06:22,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:06:22,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:06:22,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:06:22,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:06:22,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:06:22,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:06:22,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (1/1) ... [2021-11-07 02:06:22,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:06:22,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:06:22,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:06:22,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:06:22,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:06:22,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:06:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:06:22,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:06:25,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:06:25,329 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-11-07 02:06:25,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:06:25 BoogieIcfgContainer [2021-11-07 02:06:25,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:06:25,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:06:25,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:06:25,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:06:25,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:06:21" (1/3) ... [2021-11-07 02:06:25,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7323491d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:06:25, skipping insertion in model container [2021-11-07 02:06:25,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:06:22" (2/3) ... [2021-11-07 02:06:25,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7323491d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:06:25, skipping insertion in model container [2021-11-07 02:06:25,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:06:25" (3/3) ... [2021-11-07 02:06:25,341 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product42.cil.c [2021-11-07 02:06:25,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:06:25,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 02:06:25,405 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:06:25,413 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 02:06:25,413 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 02:06:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 90 states have internal predecessors, (136), 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 02:06:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 02:06:25,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:25,441 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:25,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1607383533, now seen corresponding path program 1 times [2021-11-07 02:06:25,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:25,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006372158] [2021-11-07 02:06:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:25,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:25,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:25,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:06:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:25,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:06:25,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:25,843 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 02:06:25,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:25,922 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 02:06:25,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:25,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006372158] [2021-11-07 02:06:25,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006372158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:25,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:25,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:06:25,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005409862] [2021-11-07 02:06:25,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:06:25,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:06:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:06:25,952 INFO L87 Difference]: Start difference. First operand has 91 states, 87 states have (on average 1.5632183908045978) internal successors, (136), 90 states have internal predecessors, (136), 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 02:06:25,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:25,977 INFO L93 Difference]: Finished difference Result 175 states and 264 transitions. [2021-11-07 02:06:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:06:25,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2021-11-07 02:06:25,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:25,988 INFO L225 Difference]: With dead ends: 175 [2021-11-07 02:06:25,988 INFO L226 Difference]: Without dead ends: 87 [2021-11-07 02:06:25,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 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 02:06:26,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-07 02:06:26,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-07 02:06:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 86 states have internal predecessors, (124), 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 02:06:26,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2021-11-07 02:06:26,047 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 18 [2021-11-07 02:06:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:26,048 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2021-11-07 02:06:26,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 02:06:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2021-11-07 02:06:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:06:26,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:26,050 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:26,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:26,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,263 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:26,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1734754371, now seen corresponding path program 1 times [2021-11-07 02:06:26,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:26,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846476284] [2021-11-07 02:06:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:26,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:26,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:26,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:06:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:26,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:26,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:26,542 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 02:06:26,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:26,611 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 02:06:26,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:26,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846476284] [2021-11-07 02:06:26,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846476284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:26,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:26,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:06:26,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142846843] [2021-11-07 02:06:26,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:06:26,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:26,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:06:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:06:26,617 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:06:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:26,632 INFO L93 Difference]: Finished difference Result 87 states and 124 transitions. [2021-11-07 02:06:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 19 [2021-11-07 02:06:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:26,634 INFO L225 Difference]: With dead ends: 87 [2021-11-07 02:06:26,634 INFO L226 Difference]: Without dead ends: 39 [2021-11-07 02:06:26,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 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 02:06:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-07 02:06:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-07 02:06:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 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 02:06:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-11-07 02:06:26,642 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 19 [2021-11-07 02:06:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:26,642 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-11-07 02:06:26,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 02:06:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-11-07 02:06:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 02:06:26,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:26,644 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] [2021-11-07 02:06:26,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:26,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,857 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1107356745, now seen corresponding path program 1 times [2021-11-07 02:06:26,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:26,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801618405] [2021-11-07 02:06:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:26,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:26,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:26,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:06:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:27,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:27,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:27,152 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 02:06:27,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:27,242 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 02:06:27,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:27,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801618405] [2021-11-07 02:06:27,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801618405] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:27,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:27,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:06:27,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079555438] [2021-11-07 02:06:27,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:06:27,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:06:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:06:27,250 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 02:06:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:27,297 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2021-11-07 02:06:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 24 [2021-11-07 02:06:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:27,299 INFO L225 Difference]: With dead ends: 71 [2021-11-07 02:06:27,299 INFO L226 Difference]: Without dead ends: 39 [2021-11-07 02:06:27,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 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 02:06:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-07 02:06:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-07 02:06:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 38 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 02:06:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-11-07 02:06:27,307 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 24 [2021-11-07 02:06:27,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:27,307 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-11-07 02:06:27,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 02:06:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2021-11-07 02:06:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 02:06:27,309 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:27,310 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] [2021-11-07 02:06:27,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:27,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:27,527 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:27,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1414852999, now seen corresponding path program 1 times [2021-11-07 02:06:27,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:27,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152094156] [2021-11-07 02:06:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:27,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:27,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:27,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:27,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:06:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:27,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:27,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:27,840 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 02:06:27,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:27,893 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 02:06:27,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:27,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152094156] [2021-11-07 02:06:27,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152094156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:27,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:27,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:06:27,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467472287] [2021-11-07 02:06:27,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:27,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:06:27,897 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 02:06:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:27,971 INFO L93 Difference]: Finished difference Result 93 states and 133 transitions. [2021-11-07 02:06:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:27,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-07 02:06:27,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:27,974 INFO L225 Difference]: With dead ends: 93 [2021-11-07 02:06:27,976 INFO L226 Difference]: Without dead ends: 61 [2021-11-07 02:06:27,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 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 02:06:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-07 02:06:27,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-11-07 02:06:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 58 states have internal predecessors, (83), 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 02:06:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 83 transitions. [2021-11-07 02:06:27,992 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 83 transitions. Word has length 25 [2021-11-07 02:06:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:27,993 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 83 transitions. [2021-11-07 02:06:27,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 02:06:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 83 transitions. [2021-11-07 02:06:27,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 02:06:27,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:27,995 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] [2021-11-07 02:06:28,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:28,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:28,210 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:28,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:28,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1390046811, now seen corresponding path program 1 times [2021-11-07 02:06:28,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:28,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899832428] [2021-11-07 02:06:28,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:28,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:28,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:28,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:28,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:06:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:28,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:06:28,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:28,623 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 02:06:28,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:28,741 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 02:06:28,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:28,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899832428] [2021-11-07 02:06:28,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899832428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:28,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:28,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:06:28,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951007240] [2021-11-07 02:06:28,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:06:28,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:28,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:06:28,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:06:28,750 INFO L87 Difference]: Start difference. First operand 59 states and 83 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 02:06:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:28,895 INFO L93 Difference]: Finished difference Result 271 states and 394 transitions. [2021-11-07 02:06:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:06:28,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2021-11-07 02:06:28,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:28,898 INFO L225 Difference]: With dead ends: 271 [2021-11-07 02:06:28,899 INFO L226 Difference]: Without dead ends: 219 [2021-11-07 02:06:28,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 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 02:06:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-07 02:06:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 103. [2021-11-07 02:06:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.411764705882353) internal successors, (144), 102 states have internal predecessors, (144), 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 02:06:28,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 144 transitions. [2021-11-07 02:06:28,922 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 144 transitions. Word has length 31 [2021-11-07 02:06:28,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:28,923 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 144 transitions. [2021-11-07 02:06:28,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 02:06:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 144 transitions. [2021-11-07 02:06:28,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 02:06:28,925 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:28,925 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] [2021-11-07 02:06:28,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:29,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:29,141 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash 272516125, now seen corresponding path program 1 times [2021-11-07 02:06:29,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:29,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173272399] [2021-11-07 02:06:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:29,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:29,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:29,145 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:29,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:06:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:29,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:06:29,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:29,509 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 02:06:29,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:29,620 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 02:06:29,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:29,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173272399] [2021-11-07 02:06:29,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173272399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:29,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:29,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:06:29,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405302602] [2021-11-07 02:06:29,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:06:29,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:06:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:06:29,624 INFO L87 Difference]: Start difference. First operand 103 states and 144 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 02:06:29,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:29,777 INFO L93 Difference]: Finished difference Result 376 states and 533 transitions. [2021-11-07 02:06:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 02:06:29,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 32 [2021-11-07 02:06:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:29,779 INFO L225 Difference]: With dead ends: 376 [2021-11-07 02:06:29,780 INFO L226 Difference]: Without dead ends: 280 [2021-11-07 02:06:29,780 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 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 02:06:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-07 02:06:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 102. [2021-11-07 02:06:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.396039603960396) internal successors, (141), 101 states have internal predecessors, (141), 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 02:06:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 141 transitions. [2021-11-07 02:06:29,815 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 141 transitions. Word has length 32 [2021-11-07 02:06:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:29,817 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 141 transitions. [2021-11-07 02:06:29,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 02:06:29,818 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 141 transitions. [2021-11-07 02:06:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 02:06:29,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:29,823 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] [2021-11-07 02:06:29,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:30,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:30,038 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:30,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:30,038 INFO L85 PathProgramCache]: Analyzing trace with hash -824557763, now seen corresponding path program 1 times [2021-11-07 02:06:30,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:30,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889402926] [2021-11-07 02:06:30,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:30,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:30,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:30,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:06:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:30,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:06:30,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:30,421 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 02:06:30,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:30,517 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 02:06:30,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:30,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889402926] [2021-11-07 02:06:30,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889402926] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:30,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:30,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:06:30,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960040204] [2021-11-07 02:06:30,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:06:30,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:06:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:06:30,521 INFO L87 Difference]: Start difference. First operand 102 states and 141 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 02:06:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:30,587 INFO L93 Difference]: Finished difference Result 273 states and 377 transitions. [2021-11-07 02:06:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:06:30,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-07 02:06:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:30,589 INFO L225 Difference]: With dead ends: 273 [2021-11-07 02:06:30,589 INFO L226 Difference]: Without dead ends: 178 [2021-11-07 02:06:30,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:06:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-07 02:06:30,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 108. [2021-11-07 02:06:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 107 states have internal predecessors, (147), 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 02:06:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 147 transitions. [2021-11-07 02:06:30,621 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 147 transitions. Word has length 35 [2021-11-07 02:06:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:30,621 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 147 transitions. [2021-11-07 02:06:30,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 02:06:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 147 transitions. [2021-11-07 02:06:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 02:06:30,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:30,623 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] [2021-11-07 02:06:30,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:30,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:30,841 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:30,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1835675013, now seen corresponding path program 1 times [2021-11-07 02:06:30,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:30,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097218515] [2021-11-07 02:06:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:30,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:30,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:30,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:30,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:06:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:31,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:06:31,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:31,277 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 02:06:31,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:31,390 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 02:06:31,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:31,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097218515] [2021-11-07 02:06:31,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097218515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:31,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:31,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:06:31,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752832991] [2021-11-07 02:06:31,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:06:31,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:06:31,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:06:31,392 INFO L87 Difference]: Start difference. First operand 108 states and 147 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 02:06:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:31,445 INFO L93 Difference]: Finished difference Result 291 states and 395 transitions. [2021-11-07 02:06:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:06:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 35 [2021-11-07 02:06:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:31,448 INFO L225 Difference]: With dead ends: 291 [2021-11-07 02:06:31,448 INFO L226 Difference]: Without dead ends: 190 [2021-11-07 02:06:31,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 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 02:06:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-07 02:06:31,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2021-11-07 02:06:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3603603603603605) internal successors, (151), 111 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 02:06:31,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 151 transitions. [2021-11-07 02:06:31,467 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 151 transitions. Word has length 35 [2021-11-07 02:06:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:31,468 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 151 transitions. [2021-11-07 02:06:31,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 02:06:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 151 transitions. [2021-11-07 02:06:31,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 02:06:31,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:31,470 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] [2021-11-07 02:06:31,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:31,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:31,685 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1438223929, now seen corresponding path program 1 times [2021-11-07 02:06:31,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:31,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377269204] [2021-11-07 02:06:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:31,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:31,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:31,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:06:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:31,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:31,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:32,124 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 02:06:32,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:32,247 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 02:06:32,248 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:32,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377269204] [2021-11-07 02:06:32,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377269204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:32,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:32,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:06:32,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088642321] [2021-11-07 02:06:32,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:06:32,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:32,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:06:32,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:06:32,251 INFO L87 Difference]: Start difference. First operand 112 states and 151 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 02:06:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:32,315 INFO L93 Difference]: Finished difference Result 350 states and 475 transitions. [2021-11-07 02:06:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:06:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 35 [2021-11-07 02:06:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:32,318 INFO L225 Difference]: With dead ends: 350 [2021-11-07 02:06:32,318 INFO L226 Difference]: Without dead ends: 245 [2021-11-07 02:06:32,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 02:06:32,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-07 02:06:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 195. [2021-11-07 02:06:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.3505154639175259) internal successors, (262), 194 states have internal predecessors, (262), 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 02:06:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 262 transitions. [2021-11-07 02:06:32,350 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 262 transitions. Word has length 35 [2021-11-07 02:06:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:32,350 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 262 transitions. [2021-11-07 02:06:32,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 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 02:06:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 262 transitions. [2021-11-07 02:06:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-07 02:06:32,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:32,352 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] [2021-11-07 02:06:32,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:32,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:32,570 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1113565433, now seen corresponding path program 1 times [2021-11-07 02:06:32,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:32,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324133252] [2021-11-07 02:06:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:32,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:32,573 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:32,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:06:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:32,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 02:06:32,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:33,084 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 02:06:33,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:33,246 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 02:06:33,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:33,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324133252] [2021-11-07 02:06:33,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324133252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:33,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:33,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 02:06:33,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086087566] [2021-11-07 02:06:33,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 02:06:33,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:33,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 02:06:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:06:33,249 INFO L87 Difference]: Start difference. First operand 195 states and 262 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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 02:06:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:36,613 INFO L93 Difference]: Finished difference Result 793 states and 1045 transitions. [2021-11-07 02:06:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 02:06:36,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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 36 [2021-11-07 02:06:36,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:36,618 INFO L225 Difference]: With dead ends: 793 [2021-11-07 02:06:36,618 INFO L226 Difference]: Without dead ends: 605 [2021-11-07 02:06:36,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-07 02:06:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-07 02:06:36,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 195. [2021-11-07 02:06:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.324742268041237) internal successors, (257), 194 states have internal predecessors, (257), 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 02:06:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2021-11-07 02:06:36,655 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 36 [2021-11-07 02:06:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:36,655 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2021-11-07 02:06:36,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 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 02:06:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2021-11-07 02:06:36,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 02:06:36,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:36,658 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:36,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:36,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:36,871 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:36,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1527108990, now seen corresponding path program 1 times [2021-11-07 02:06:36,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:36,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821075678] [2021-11-07 02:06:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:36,872 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:36,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:36,873 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:36,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:06:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:37,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:06:37,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:37,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:37,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:37,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821075678] [2021-11-07 02:06:37,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821075678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:37,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:37,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:06:37,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495368232] [2021-11-07 02:06:37,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:06:37,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:37,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:06:37,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:06:37,530 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 02:06:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:37,619 INFO L93 Difference]: Finished difference Result 319 states and 420 transitions. [2021-11-07 02:06:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:06:37,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 02:06:37,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:37,622 INFO L225 Difference]: With dead ends: 319 [2021-11-07 02:06:37,622 INFO L226 Difference]: Without dead ends: 317 [2021-11-07 02:06:37,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 99 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 02:06:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-07 02:06:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 235. [2021-11-07 02:06:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.3504273504273505) internal successors, (316), 234 states have internal predecessors, (316), 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 02:06:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 316 transitions. [2021-11-07 02:06:37,670 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 316 transitions. Word has length 51 [2021-11-07 02:06:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:37,670 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 316 transitions. [2021-11-07 02:06:37,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 02:06:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 316 transitions. [2021-11-07 02:06:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 02:06:37,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:37,674 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:37,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:37,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:37,890 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 338659975, now seen corresponding path program 1 times [2021-11-07 02:06:37,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:37,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079080393] [2021-11-07 02:06:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:37,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:37,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:37,893 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:37,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:06:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:06:39,345 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:06:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:06:40,846 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 02:06:40,846 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:06:40,847 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:06:40,849 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:06:40,850 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:06:40,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:41,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:41,072 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:41,076 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:06:41,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:06:41 BoogieIcfgContainer [2021-11-07 02:06:41,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:06:41,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:06:41,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:06:41,249 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:06:41,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:06:25" (3/4) ... [2021-11-07 02:06:41,251 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 02:06:41,394 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:06:41,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:06:41,399 INFO L168 Benchmark]: Toolchain (without parser) took 19739.69 ms. Allocated memory was 62.9 MB in the beginning and 92.3 MB in the end (delta: 29.4 MB). Free memory was 41.3 MB in the beginning and 22.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 46.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:41,400 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:06:41,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.54 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 30.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:41,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.22 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 57.5 MB in the end (delta: -27.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:41,402 INFO L168 Benchmark]: Boogie Preprocessor took 52.96 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 55.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:41,402 INFO L168 Benchmark]: RCFGBuilder took 2825.42 ms. Allocated memory is still 75.5 MB. Free memory was 54.7 MB in the beginning and 47.3 MB in the end (delta: 7.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:41,403 INFO L168 Benchmark]: TraceAbstraction took 15913.91 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 46.9 MB in the beginning and 51.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:41,403 INFO L168 Benchmark]: Witness Printer took 149.23 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 22.9 MB in the end (delta: 28.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-07 02:06:41,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory is still 43.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 700.54 ms. Allocated memory is still 62.9 MB. Free memory was 41.1 MB in the beginning and 30.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.22 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 30.4 MB in the beginning and 57.5 MB in the end (delta: -27.0 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.96 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 55.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2825.42 ms. Allocated memory is still 75.5 MB. Free memory was 54.7 MB in the beginning and 47.3 MB in the end (delta: 7.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15913.91 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 46.9 MB in the beginning and 51.0 MB in the end (delta: -4.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. * Witness Printer took 149.23 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 22.9 MB in the end (delta: 28.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 854]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L496] int pumpRunning = 0; [L497] int systemActive = 1; [L676] int methAndRunningLastTime ; [L753] int cleanupTimeShifts = 4; [L860] int waterLevel = 1; [L861] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L827] int retValue_acc ; [L828] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L744] int retValue_acc ; [L747] retValue_acc = 1 [L748] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] tmp = valid_product() [L836] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L681] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L431] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L433] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L878] COND TRUE waterLevel < 2 [L879] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L670] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L504] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L511] COND TRUE \read(systemActive) [L533] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L536] COND TRUE ! pumpRunning [L648] int retValue_acc ; [L649] int tmp ; [L650] int tmp___0 ; [L940] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L943] COND FALSE !(waterLevel < 2) [L947] retValue_acc = 0 [L948] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L654] tmp = isHighWaterSensorDry() [L656] COND FALSE !(\read(tmp)) [L659] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L661] retValue_acc = tmp___0 [L662] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L538] tmp = isHighWaterLevel() [L540] COND TRUE \read(tmp) [L567] int tmp ; [L592] int retValue_acc ; [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] retValue_acc = isMethaneLevelCritical() [L598] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L571] tmp = isMethaneAlarm() [L573] COND FALSE !(\read(tmp)) [L561] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L686] int tmp ; [L687] int tmp___0 ; [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L691] tmp = isMethaneLevelCritical() [L693] COND FALSE !(\read(tmp)) [L709] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L431] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L433] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L890] COND FALSE !(\read(methaneLevelCritical)) [L893] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L670] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L504] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L866] COND TRUE waterLevel > 0 [L867] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L511] COND TRUE \read(systemActive) [L533] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L536] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L686] int tmp ; [L687] int tmp___0 ; [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L691] tmp = isMethaneLevelCritical() [L693] COND TRUE \read(tmp) [L603] int retValue_acc ; [L606] retValue_acc = pumpRunning [L607] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L695] tmp___0 = isPumpRunning() [L697] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L698] COND FALSE !(\read(methAndRunningLastTime)) [L703] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L431] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L433] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L670] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L504] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L866] COND TRUE waterLevel > 0 [L867] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L511] COND TRUE \read(systemActive) [L533] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L536] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L686] int tmp ; [L687] int tmp___0 ; [L899] int retValue_acc ; [L902] retValue_acc = methaneLevelCritical [L903] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L691] tmp = isMethaneLevelCritical() [L693] COND TRUE \read(tmp) [L603] int retValue_acc ; [L606] retValue_acc = pumpRunning [L607] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L695] tmp___0 = isPumpRunning() [L697] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L698] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L854] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 854]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 854]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 15.6s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 874 SDtfs, 1265 SDslu, 1945 SDs, 0 SdLazy, 222 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 689 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=11, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 986 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 660 ConstructedInterpolants, 0 QuantifiedInterpolants, 1086 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2335 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 02:06:41,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20416b7b-4caa-42f9-b9bf-050b7ec5c1c8/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE