./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product32.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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:45,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:45,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:45,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:45,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:45,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:45,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:45,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:45,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:45,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:45,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:45,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:45,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:45,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:45,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:45,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:45,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:45,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:45,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:45,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:45,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:45,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:45,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:45,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:45,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:45,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:45,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:45,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:45,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:45,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:45,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:45,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:45,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:45,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:45,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:45,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:45,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:45,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:45,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:45,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:45,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:45,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:19:45,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:45,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:45,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:45,162 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:45,162 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:45,162 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:45,163 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:19:45,163 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:45,163 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:45,163 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:19:45,163 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:19:45,163 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:45,164 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:19:45,164 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:19:45,164 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:19:45,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:45,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:19:45,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:19:45,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:19:45,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:45,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:45,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:45,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:45,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:45,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:19:45,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:45,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:45,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:45,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:45,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:45,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:45,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:45,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:45,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:45,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:19:45,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:19:45,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:45,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:45,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:45,169 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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b [2021-11-07 01:19:45,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:45,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:45,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:45,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:45,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:45,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2021-11-07 01:19:45,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/7f8092c10/a2f6239f458446e59b7fd0ddf9f154b0/FLAG10fded940 [2021-11-07 01:19:46,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:46,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2021-11-07 01:19:46,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/7f8092c10/a2f6239f458446e59b7fd0ddf9f154b0/FLAG10fded940 [2021-11-07 01:19:46,356 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/7f8092c10/a2f6239f458446e59b7fd0ddf9f154b0 [2021-11-07 01:19:46,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:46,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:46,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:46,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:46,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:46,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:46" (1/1) ... [2021-11-07 01:19:46,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1595ae80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:46, skipping insertion in model container [2021-11-07 01:19:46,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:46" (1/1) ... [2021-11-07 01:19:46,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:46,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:47,020 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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2021-11-07 01:19:47,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:47,042 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:19:47,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3ad4619f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:47, skipping insertion in model container [2021-11-07 01:19:47,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:47,044 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:19:47,046 INFO L168 Benchmark]: Toolchain (without parser) took 684.39 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 69.9 MB in the end (delta: -5.8 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:47,047 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:47,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.71 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 69.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:47,050 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 681.71 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 69.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 574]: 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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:49,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:49,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:49,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:49,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:49,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:49,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:49,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:49,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:49,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:49,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:49,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:49,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:49,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:49,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:49,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:49,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:49,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:49,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:49,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:49,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:49,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:49,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:49,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:49,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:49,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:49,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:49,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:49,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:49,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:49,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:49,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:49,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:49,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:49,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:49,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:49,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:49,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:49,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:49,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:49,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:49,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:19:49,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:49,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:49,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:49,611 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:49,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:49,612 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:49,612 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:49,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:49,612 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:49,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:49,613 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:19:49,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:19:49,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:49,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:49,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:49,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:49,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:49,615 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:19:49,615 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:19:49,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:19:49,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:49,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:49,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:49,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:49,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:19:49,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:49,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:49,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:49,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:49,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:49,618 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:19:49,619 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:19:49,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:49,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:49,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:49,620 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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ead0301c8481fccc00f115bae086423ed9e315d4392b2a0732a4d381346437b [2021-11-07 01:19:49,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:49,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:49,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:49,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:49,988 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:49,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2021-11-07 01:19:50,088 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/97ea97177/8739290436dc4503bce02215ec99a002/FLAGdb19f6b3a [2021-11-07 01:19:50,860 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:50,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c [2021-11-07 01:19:50,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/97ea97177/8739290436dc4503bce02215ec99a002/FLAGdb19f6b3a [2021-11-07 01:19:50,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/data/97ea97177/8739290436dc4503bce02215ec99a002 [2021-11-07 01:19:50,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:50,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:50,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:50,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:50,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:50,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:50" (1/1) ... [2021-11-07 01:19:50,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417945ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:50, skipping insertion in model container [2021-11-07 01:19:50,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:50" (1/1) ... [2021-11-07 01:19:51,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:51,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:51,843 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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2021-11-07 01:19:51,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:51,877 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:19:51,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:52,069 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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2021-11-07 01:19:52,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:52,083 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:19:52,233 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_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/sv-benchmarks/c/product-lines/elevator_spec14_product32.cil.c[71521,71534] [2021-11-07 01:19:52,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:52,280 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:19:52,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52 WrapperNode [2021-11-07 01:19:52,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:52,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:52,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:19:52,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:19:52,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:52,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:53,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:53,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:19:53,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:19:53,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:19:53,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:53,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:53,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:53,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:54,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:54,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:54,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:55,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:19:55,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:19:55,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:19:55,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:19:55,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (1/1) ... [2021-11-07 01:19:55,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:55,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:19:55,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:19:55,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:19:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:19:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:19:55,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:19:55,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:20:29,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:20:29,405 INFO L299 CfgBuilder]: Removed 4063 assume(true) statements. [2021-11-07 01:20:29,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:29 BoogieIcfgContainer [2021-11-07 01:20:29,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:20:29,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:20:29,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:20:29,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:20:29,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:50" (1/3) ... [2021-11-07 01:20:29,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:29, skipping insertion in model container [2021-11-07 01:20:29,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:52" (2/3) ... [2021-11-07 01:20:29,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3647640b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:29, skipping insertion in model container [2021-11-07 01:20:29,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:29" (3/3) ... [2021-11-07 01:20:29,436 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product32.cil.c [2021-11-07 01:20:29,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:20:29,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 01:20:29,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:20:29,582 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:20:29,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 01:20:29,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 17487 states, 17481 states have (on average 1.886562553629655) internal successors, (32979), 17486 states have internal predecessors, (32979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 01:20:29,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:29,881 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] [2021-11-07 01:20:29,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:20:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1890367581, now seen corresponding path program 1 times [2021-11-07 01:20:29,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:29,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708565445] [2021-11-07 01:20:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:29,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:29,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:29,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:20:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:30,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:20:30,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:30,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:30,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:30,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708565445] [2021-11-07 01:20:30,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708565445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:30,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:30,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:20:30,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831029705] [2021-11-07 01:20:30,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:20:30,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:30,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:20:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:30,735 INFO L87 Difference]: Start difference. First operand has 17487 states, 17481 states have (on average 1.886562553629655) internal successors, (32979), 17486 states have internal predecessors, (32979), 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 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:32,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:32,883 INFO L93 Difference]: Finished difference Result 49018 states and 92441 transitions. [2021-11-07 01:20:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:20:32,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 27 [2021-11-07 01:20:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:33,119 INFO L225 Difference]: With dead ends: 49018 [2021-11-07 01:20:33,120 INFO L226 Difference]: Without dead ends: 31531 [2021-11-07 01:20:33,155 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:33,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31531 states. [2021-11-07 01:20:34,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31531 to 17483. [2021-11-07 01:20:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17483 states, 17478 states have (on average 1.8857420757523744) internal successors, (32959), 17482 states have internal predecessors, (32959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:34,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17483 states to 17483 states and 32959 transitions. [2021-11-07 01:20:34,147 INFO L78 Accepts]: Start accepts. Automaton has 17483 states and 32959 transitions. Word has length 27 [2021-11-07 01:20:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:34,148 INFO L470 AbstractCegarLoop]: Abstraction has 17483 states and 32959 transitions. [2021-11-07 01:20:34,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 17483 states and 32959 transitions. [2021-11-07 01:20:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 01:20:34,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:34,158 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 01:20:34,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:34,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:34,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:20:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1252184599, now seen corresponding path program 1 times [2021-11-07 01:20:34,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:34,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231583222] [2021-11-07 01:20:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:34,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:34,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:34,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:20:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:34,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:20:34,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:34,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:34,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:34,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231583222] [2021-11-07 01:20:34,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231583222] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:34,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:34,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:20:34,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257058518] [2021-11-07 01:20:34,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:20:34,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:20:34,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:20:34,950 INFO L87 Difference]: Start difference. First operand 17483 states and 32959 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 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 01:20:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:38,731 INFO L93 Difference]: Finished difference Result 69897 states and 131761 transitions. [2021-11-07 01:20:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:20:38,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 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 32 [2021-11-07 01:20:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:38,943 INFO L225 Difference]: With dead ends: 69897 [2021-11-07 01:20:38,943 INFO L226 Difference]: Without dead ends: 52435 [2021-11-07 01:20:38,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:20:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52435 states. [2021-11-07 01:20:39,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52435 to 17461. [2021-11-07 01:20:39,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17461 states, 17456 states have (on average 1.8851970669110907) internal successors, (32908), 17460 states have internal predecessors, (32908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 32908 transitions. [2021-11-07 01:20:40,007 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 32908 transitions. Word has length 32 [2021-11-07 01:20:40,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:40,008 INFO L470 AbstractCegarLoop]: Abstraction has 17461 states and 32908 transitions. [2021-11-07 01:20:40,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 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 01:20:40,009 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 32908 transitions. [2021-11-07 01:20:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:20:40,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:40,010 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] [2021-11-07 01:20:40,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:40,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:40,225 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:20:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 664868297, now seen corresponding path program 1 times [2021-11-07 01:20:40,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:40,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788760092] [2021-11-07 01:20:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:40,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:40,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:40,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:40,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:20:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:40,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:20:40,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:40,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:40,779 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:40,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788760092] [2021-11-07 01:20:40,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788760092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:40,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:40,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:20:40,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681508015] [2021-11-07 01:20:40,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:20:40,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:40,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:20:40,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:40,784 INFO L87 Difference]: Start difference. First operand 17461 states and 32908 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:42,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:42,265 INFO L93 Difference]: Finished difference Result 48877 states and 92129 transitions. [2021-11-07 01:20:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:20:42,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 33 [2021-11-07 01:20:42,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:42,355 INFO L225 Difference]: With dead ends: 48877 [2021-11-07 01:20:42,356 INFO L226 Difference]: Without dead ends: 31437 [2021-11-07 01:20:42,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31437 states. [2021-11-07 01:20:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31437 to 17461. [2021-11-07 01:20:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17461 states, 17456 states have (on average 1.884853345554537) internal successors, (32902), 17460 states have internal predecessors, (32902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 32902 transitions. [2021-11-07 01:20:43,251 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 32902 transitions. Word has length 33 [2021-11-07 01:20:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:43,252 INFO L470 AbstractCegarLoop]: Abstraction has 17461 states and 32902 transitions. [2021-11-07 01:20:43,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 32902 transitions. [2021-11-07 01:20:43,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 01:20:43,257 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:43,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:43,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:43,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:43,481 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:20:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash -118852452, now seen corresponding path program 1 times [2021-11-07 01:20:43,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:43,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640096354] [2021-11-07 01:20:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:43,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:43,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:43,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:43,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:20:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:43,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:20:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:43,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:44,123 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:44,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640096354] [2021-11-07 01:20:44,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640096354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:44,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:44,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:20:44,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491737589] [2021-11-07 01:20:44,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:20:44,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:20:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:20:44,126 INFO L87 Difference]: Start difference. First operand 17461 states and 32902 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:47,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:47,956 INFO L93 Difference]: Finished difference Result 97788 states and 184308 transitions. [2021-11-07 01:20:47,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:20:47,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 38 [2021-11-07 01:20:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:48,491 INFO L225 Difference]: With dead ends: 97788 [2021-11-07 01:20:48,491 INFO L226 Difference]: Without dead ends: 80351 [2021-11-07 01:20:48,547 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:20:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80351 states. [2021-11-07 01:20:49,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80351 to 17463. [2021-11-07 01:20:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17463 states, 17458 states have (on average 1.8844655745217092) internal successors, (32899), 17462 states have internal predecessors, (32899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17463 states to 17463 states and 32899 transitions. [2021-11-07 01:20:49,825 INFO L78 Accepts]: Start accepts. Automaton has 17463 states and 32899 transitions. Word has length 38 [2021-11-07 01:20:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:49,826 INFO L470 AbstractCegarLoop]: Abstraction has 17463 states and 32899 transitions. [2021-11-07 01:20:49,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:49,827 INFO L276 IsEmpty]: Start isEmpty. Operand 17463 states and 32899 transitions. [2021-11-07 01:20:49,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 01:20:49,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:49,829 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:49,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:50,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:50,043 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:20:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1910226346, now seen corresponding path program 1 times [2021-11-07 01:20:50,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:50,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001903984] [2021-11-07 01:20:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:50,046 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:50,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:50,047 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:50,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:20:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:50,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:20:50,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:50,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:51,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:51,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001903984] [2021-11-07 01:20:51,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001903984] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:51,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:51,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 01:20:51,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966428765] [2021-11-07 01:20:51,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:20:51,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:20:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:51,036 INFO L87 Difference]: Start difference. First operand 17463 states and 32899 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:55,284 INFO L93 Difference]: Finished difference Result 54851 states and 103501 transitions. [2021-11-07 01:20:55,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:20:55,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 39 [2021-11-07 01:20:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:55,425 INFO L225 Difference]: With dead ends: 54851 [2021-11-07 01:20:55,425 INFO L226 Difference]: Without dead ends: 40862 [2021-11-07 01:20:55,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:20:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40862 states. [2021-11-07 01:20:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40862 to 24088. [2021-11-07 01:20:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24088 states, 24083 states have (on average 1.885147199269194) internal successors, (45400), 24087 states have internal predecessors, (45400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24088 states to 24088 states and 45400 transitions. [2021-11-07 01:20:56,587 INFO L78 Accepts]: Start accepts. Automaton has 24088 states and 45400 transitions. Word has length 39 [2021-11-07 01:20:56,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:56,590 INFO L470 AbstractCegarLoop]: Abstraction has 24088 states and 45400 transitions. [2021-11-07 01:20:56,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 24088 states and 45400 transitions. [2021-11-07 01:20:56,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:20:56,597 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:56,597 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:56,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:20:56,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:20:56,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:20:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash 889717692, now seen corresponding path program 1 times [2021-11-07 01:20:56,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:20:56,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685122384] [2021-11-07 01:20:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:56,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:20:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:20:56,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:20:56,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:20:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:57,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:20:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:57,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:57,699 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:20:57,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685122384] [2021-11-07 01:20:57,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685122384] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:57,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:57,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:20:57,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176064887] [2021-11-07 01:20:57,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:20:57,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:20:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:20:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:20:57,702 INFO L87 Difference]: Start difference. First operand 24088 states and 45400 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:07,761 INFO L93 Difference]: Finished difference Result 50424 states and 94714 transitions. [2021-11-07 01:21:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:21:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-07 01:21:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:07,822 INFO L225 Difference]: With dead ends: 50424 [2021-11-07 01:21:07,822 INFO L226 Difference]: Without dead ends: 29670 [2021-11-07 01:21:07,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:21:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29670 states. [2021-11-07 01:21:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29670 to 28942. [2021-11-07 01:21:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28942 states, 28937 states have (on average 1.879254933130594) internal successors, (54380), 28941 states have internal predecessors, (54380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28942 states to 28942 states and 54380 transitions. [2021-11-07 01:21:09,034 INFO L78 Accepts]: Start accepts. Automaton has 28942 states and 54380 transitions. Word has length 58 [2021-11-07 01:21:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:09,034 INFO L470 AbstractCegarLoop]: Abstraction has 28942 states and 54380 transitions. [2021-11-07 01:21:09,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:09,035 INFO L276 IsEmpty]: Start isEmpty. Operand 28942 states and 54380 transitions. [2021-11-07 01:21:09,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:21:09,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:09,042 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:09,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:09,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:09,266 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:21:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash -915720642, now seen corresponding path program 1 times [2021-11-07 01:21:09,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:09,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157170092] [2021-11-07 01:21:09,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:09,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:09,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:09,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:21:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:09,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:21:09,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:09,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:10,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:10,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157170092] [2021-11-07 01:21:10,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157170092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:10,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:10,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:21:10,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433731587] [2021-11-07 01:21:10,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:21:10,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:10,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:21:10,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:21:10,148 INFO L87 Difference]: Start difference. First operand 28942 states and 54380 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:11,338 INFO L93 Difference]: Finished difference Result 46512 states and 87261 transitions. [2021-11-07 01:21:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:21:11,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-07 01:21:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:11,364 INFO L225 Difference]: With dead ends: 46512 [2021-11-07 01:21:11,364 INFO L226 Difference]: Without dead ends: 19612 [2021-11-07 01:21:11,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:21:11,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19612 states. [2021-11-07 01:21:11,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19612 to 18745. [2021-11-07 01:21:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18745 states, 18740 states have (on average 1.8821237993596585) internal successors, (35271), 18744 states have internal predecessors, (35271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18745 states to 18745 states and 35271 transitions. [2021-11-07 01:21:12,005 INFO L78 Accepts]: Start accepts. Automaton has 18745 states and 35271 transitions. Word has length 58 [2021-11-07 01:21:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:12,005 INFO L470 AbstractCegarLoop]: Abstraction has 18745 states and 35271 transitions. [2021-11-07 01:21:12,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 18745 states and 35271 transitions. [2021-11-07 01:21:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:21:12,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:12,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:12,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:12,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:12,222 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:21:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -637672382, now seen corresponding path program 1 times [2021-11-07 01:21:12,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:12,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281655159] [2021-11-07 01:21:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:12,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:12,225 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:12,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:21:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:12,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:21:12,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:12,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:13,151 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:13,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281655159] [2021-11-07 01:21:13,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281655159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:13,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:13,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:21:13,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000678249] [2021-11-07 01:21:13,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:21:13,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:21:13,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:21:13,168 INFO L87 Difference]: Start difference. First operand 18745 states and 35271 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:26,497 INFO L93 Difference]: Finished difference Result 65214 states and 122935 transitions. [2021-11-07 01:21:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:21:26,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 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 59 [2021-11-07 01:21:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:26,564 INFO L225 Difference]: With dead ends: 65214 [2021-11-07 01:21:26,564 INFO L226 Difference]: Without dead ends: 46502 [2021-11-07 01:21:26,582 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:21:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46502 states. [2021-11-07 01:21:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46502 to 18745. [2021-11-07 01:21:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18745 states, 18740 states have (on average 1.8235325506937032) internal successors, (34173), 18744 states have internal predecessors, (34173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18745 states to 18745 states and 34173 transitions. [2021-11-07 01:21:27,494 INFO L78 Accepts]: Start accepts. Automaton has 18745 states and 34173 transitions. Word has length 59 [2021-11-07 01:21:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:27,494 INFO L470 AbstractCegarLoop]: Abstraction has 18745 states and 34173 transitions. [2021-11-07 01:21:27,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18745 states and 34173 transitions. [2021-11-07 01:21:27,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:21:27,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:27,498 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:27,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 01:21:27,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:27,700 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:21:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:27,701 INFO L85 PathProgramCache]: Analyzing trace with hash -755843636, now seen corresponding path program 1 times [2021-11-07 01:21:27,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:27,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097171132] [2021-11-07 01:21:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:27,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:27,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:27,703 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:27,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:21:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:28,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:21:28,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:28,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:28,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:28,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:28,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097171132] [2021-11-07 01:21:28,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097171132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:28,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:28,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:21:28,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545509058] [2021-11-07 01:21:28,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:21:28,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:21:28,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:21:28,587 INFO L87 Difference]: Start difference. First operand 18745 states and 34173 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:41,040 INFO L93 Difference]: Finished difference Result 89903 states and 166239 transitions. [2021-11-07 01:21:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:21:41,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 01:21:41,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:41,157 INFO L225 Difference]: With dead ends: 89903 [2021-11-07 01:21:41,157 INFO L226 Difference]: Without dead ends: 71218 [2021-11-07 01:21:41,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:21:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71218 states. [2021-11-07 01:21:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71218 to 26823. [2021-11-07 01:21:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26823 states, 26818 states have (on average 1.823849653217988) internal successors, (48912), 26822 states have internal predecessors, (48912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26823 states to 26823 states and 48912 transitions. [2021-11-07 01:21:42,589 INFO L78 Accepts]: Start accepts. Automaton has 26823 states and 48912 transitions. Word has length 71 [2021-11-07 01:21:42,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:42,589 INFO L470 AbstractCegarLoop]: Abstraction has 26823 states and 48912 transitions. [2021-11-07 01:21:42,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:42,589 INFO L276 IsEmpty]: Start isEmpty. Operand 26823 states and 48912 transitions. [2021-11-07 01:21:42,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:21:42,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:42,593 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:42,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:42,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:42,797 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:21:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1116307115, now seen corresponding path program 1 times [2021-11-07 01:21:42,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:42,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272849268] [2021-11-07 01:21:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:42,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:42,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:42,799 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:42,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:21:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:43,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:21:43,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:43,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:45,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:45,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272849268] [2021-11-07 01:21:45,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272849268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:45,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:45,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:21:45,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407309331] [2021-11-07 01:21:45,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:21:45,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:21:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:21:45,134 INFO L87 Difference]: Start difference. First operand 26823 states and 48912 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:54,378 INFO L93 Difference]: Finished difference Result 91504 states and 166667 transitions. [2021-11-07 01:21:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:21:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 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 74 [2021-11-07 01:21:54,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:54,471 INFO L225 Difference]: With dead ends: 91504 [2021-11-07 01:21:54,471 INFO L226 Difference]: Without dead ends: 64733 [2021-11-07 01:21:54,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:21:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64733 states. [2021-11-07 01:21:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64733 to 39924. [2021-11-07 01:21:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39924 states, 39919 states have (on average 1.8087627445577295) internal successors, (72204), 39923 states have internal predecessors, (72204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39924 states to 39924 states and 72204 transitions. [2021-11-07 01:21:56,278 INFO L78 Accepts]: Start accepts. Automaton has 39924 states and 72204 transitions. Word has length 74 [2021-11-07 01:21:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:56,278 INFO L470 AbstractCegarLoop]: Abstraction has 39924 states and 72204 transitions. [2021-11-07 01:21:56,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 39924 states and 72204 transitions. [2021-11-07 01:21:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 01:21:56,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:56,283 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:56,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-07 01:21:56,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:21:56,502 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:21:56,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1447082752, now seen corresponding path program 1 times [2021-11-07 01:21:56,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:21:56,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990744873] [2021-11-07 01:21:56,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:56,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:21:56,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:21:56,504 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:21:56,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:21:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:57,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:21:57,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:57,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:57,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:21:57,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990744873] [2021-11-07 01:21:57,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990744873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:57,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:57,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:21:57,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041437758] [2021-11-07 01:21:57,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:21:57,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:21:57,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:21:57,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:21:57,508 INFO L87 Difference]: Start difference. First operand 39924 states and 72204 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:18,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:18,716 INFO L93 Difference]: Finished difference Result 195874 states and 357052 transitions. [2021-11-07 01:22:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:22:18,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 01:22:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:19,009 INFO L225 Difference]: With dead ends: 195874 [2021-11-07 01:22:19,010 INFO L226 Difference]: Without dead ends: 156001 [2021-11-07 01:22:19,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:22:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156001 states. [2021-11-07 01:22:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156001 to 52934. [2021-11-07 01:22:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52934 states, 52929 states have (on average 1.8070433977592624) internal successors, (95645), 52933 states have internal predecessors, (95645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:22,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52934 states to 52934 states and 95645 transitions. [2021-11-07 01:22:22,204 INFO L78 Accepts]: Start accepts. Automaton has 52934 states and 95645 transitions. Word has length 75 [2021-11-07 01:22:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:22,204 INFO L470 AbstractCegarLoop]: Abstraction has 52934 states and 95645 transitions. [2021-11-07 01:22:22,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand 52934 states and 95645 transitions. [2021-11-07 01:22:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:22:22,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:22,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:22,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-07 01:22:22,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:22,427 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:22:22,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1667143117, now seen corresponding path program 1 times [2021-11-07 01:22:22,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:22,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988121162] [2021-11-07 01:22:22,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:22,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:22,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:22,429 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:22,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:22:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:23,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:22:23,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:23,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:23,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:23,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988121162] [2021-11-07 01:22:23,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988121162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:23,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:23,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:22:23,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784767695] [2021-11-07 01:22:23,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:22:23,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:22:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:22:23,440 INFO L87 Difference]: Start difference. First operand 52934 states and 95645 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:22:39,211 INFO L93 Difference]: Finished difference Result 164133 states and 299900 transitions. [2021-11-07 01:22:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:22:39,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-07 01:22:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:22:39,390 INFO L225 Difference]: With dead ends: 164133 [2021-11-07 01:22:39,390 INFO L226 Difference]: Without dead ends: 111237 [2021-11-07 01:22:39,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:22:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111237 states. [2021-11-07 01:22:42,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111237 to 70106. [2021-11-07 01:22:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70106 states, 70101 states have (on average 1.7678492460877877) internal successors, (123928), 70105 states have internal predecessors, (123928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70106 states to 70106 states and 123928 transitions. [2021-11-07 01:22:42,869 INFO L78 Accepts]: Start accepts. Automaton has 70106 states and 123928 transitions. Word has length 76 [2021-11-07 01:22:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:22:42,869 INFO L470 AbstractCegarLoop]: Abstraction has 70106 states and 123928 transitions. [2021-11-07 01:22:42,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:22:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 70106 states and 123928 transitions. [2021-11-07 01:22:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:22:42,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:22:42,872 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:22:42,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:22:43,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:22:43,073 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 01:22:43,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:22:43,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1836603733, now seen corresponding path program 1 times [2021-11-07 01:22:43,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:22:43,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059155770] [2021-11-07 01:22:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:22:43,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:22:43,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:22:43,075 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:22:43,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d0b9c03-f0ed-40e1-99f3-fdc95e60c5e1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:22:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:22:43,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:22:43,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:22:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:43,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:22:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:22:44,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:22:44,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059155770] [2021-11-07 01:22:44,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059155770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:22:44,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:22:44,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:22:44,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664632990] [2021-11-07 01:22:44,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:22:44,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:22:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:22:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:22:44,050 INFO L87 Difference]: Start difference. First operand 70106 states and 123928 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 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)