./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH --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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:52,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:52,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:53,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:53,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:53,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:53,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:53,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:53,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:53,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:53,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:53,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:53,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:53,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:53,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:53,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:53,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:53,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:53,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:53,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:53,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:53,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:53,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:53,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:53,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:53,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:53,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:53,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:53,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:53,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:53,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:53,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:53,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:53,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:53,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:53,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:53,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:53,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:53,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:53,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:53,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:53,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:22:53,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:53,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:53,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:53,131 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:53,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:53,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:53,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:22:53,132 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:53,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:53,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:22:53,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:22:53,133 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:53,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:22:53,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:22:53,134 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:22:53,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:53,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:22:53,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:22:53,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:22:53,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:53,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:53,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:53,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:53,136 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:53,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:22:53,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:53,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:53,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:53,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:53,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:53,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:53,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:53,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:53,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:53,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:22:53,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:22:53,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:53,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:53,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:53,141 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_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2021-11-03 04:22:53,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:53,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:53,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:53,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:53,461 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:53,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2021-11-03 04:22:53,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/574d3ba41/991f7d448165413197a5aee434f03ba2/FLAG0001066ce [2021-11-03 04:22:54,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:54,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2021-11-03 04:22:54,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/574d3ba41/991f7d448165413197a5aee434f03ba2/FLAG0001066ce [2021-11-03 04:22:54,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/574d3ba41/991f7d448165413197a5aee434f03ba2 [2021-11-03 04:22:54,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:54,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:54,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:54,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:54,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:54,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:54" (1/1) ... [2021-11-03 04:22:54,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e8058ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:54, skipping insertion in model container [2021-11-03 04:22:54,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:54" (1/1) ... [2021-11-03 04:22:54,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:54,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:54,655 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_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2021-11-03 04:22:55,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:55,096 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) [2021-11-03 04:22:55,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ada89c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:55, skipping insertion in model container [2021-11-03 04:22:55,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:55,098 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:22:55,100 INFO L168 Benchmark]: Toolchain (without parser) took 731.10 ms. Allocated memory is still 102.8 MB. Free memory was 60.5 MB in the beginning and 62.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:55,100 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 102.8 MB. Free memory was 79.6 MB in the beginning and 79.5 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:22:55,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.60 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 62.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:55,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 102.8 MB. Free memory was 79.6 MB in the beginning and 79.5 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 724.60 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 62.2 MB in the end (delta: -1.9 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: 188]: 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_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH --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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:57,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:57,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:57,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:57,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:57,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:57,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:57,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:57,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:57,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:57,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:57,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:57,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:57,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:57,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:57,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:57,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:57,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:57,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:57,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:57,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:57,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:57,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:57,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:57,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:57,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:57,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:57,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:57,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:57,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:57,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:57,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:57,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:57,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:57,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:57,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:57,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:57,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:57,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:57,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:57,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:57,555 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:22:57,598 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:57,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:57,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:57,600 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:57,600 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:57,601 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:57,601 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:57,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:57,601 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:57,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:57,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:22:57,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:22:57,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:57,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:57,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:57,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:57,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:57,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:22:57,606 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:22:57,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:22:57,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:57,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:57,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:57,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:57,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:22:57,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:57,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:57,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:57,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:57,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:57,609 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:22:57,609 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:57,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:57,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:57,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:57,611 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_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2021-11-03 04:22:58,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:58,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:58,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:58,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:58,049 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:58,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2021-11-03 04:22:58,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/05c582f52/69a07f985b6b4dfcba7249010780dbd4/FLAG0cb9527d0 [2021-11-03 04:22:58,846 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:58,846 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2021-11-03 04:22:58,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/05c582f52/69a07f985b6b4dfcba7249010780dbd4/FLAG0cb9527d0 [2021-11-03 04:22:58,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/data/05c582f52/69a07f985b6b4dfcba7249010780dbd4 [2021-11-03 04:22:58,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:58,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:58,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:58,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:59,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:59,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:58" (1/1) ... [2021-11-03 04:22:59,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561fcadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:59, skipping insertion in model container [2021-11-03 04:22:59,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:58" (1/1) ... [2021-11-03 04:22:59,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:59,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:59,319 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_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2021-11-03 04:22:59,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:59,754 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:22:59,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:59,800 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_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2021-11-03 04:22:59,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:59,929 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:22:59,942 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_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2021-11-03 04:23:00,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:23:00,130 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:23:00,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00 WrapperNode [2021-11-03 04:23:00,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:23:00,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:23:00,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:23:00,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:23:00,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:00,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:00,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:23:00,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:23:00,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:23:00,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:23:00,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:00,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:00,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:00,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:01,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:01,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:01,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:01,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:23:01,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:23:01,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:23:01,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:23:01,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (1/1) ... [2021-11-03 04:23:01,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:23:01,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:23:01,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:23:01,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:23:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:23:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:23:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:23:01,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:23:17,596 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:23:17,597 INFO L299 CfgBuilder]: Removed 1529 assume(true) statements. [2021-11-03 04:23:17,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:17 BoogieIcfgContainer [2021-11-03 04:23:17,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:23:17,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:23:17,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:23:17,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:23:17,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:22:58" (1/3) ... [2021-11-03 04:23:17,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eca3cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:17, skipping insertion in model container [2021-11-03 04:23:17,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:00" (2/3) ... [2021-11-03 04:23:17,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eca3cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:17, skipping insertion in model container [2021-11-03 04:23:17,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:17" (3/3) ... [2021-11-03 04:23:17,614 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2021-11-03 04:23:17,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:23:17,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:23:17,708 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:23:17,716 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 [2021-11-03 04:23:17,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:23:17,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 6907 states, 6901 states have (on average 1.893058976959861) internal successors, (13064), 6906 states have internal predecessors, (13064), 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) [2021-11-03 04:23:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 04:23:17,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:17,866 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:17,866 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)] === [2021-11-03 04:23:17,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:17,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1109125055, now seen corresponding path program 1 times [2021-11-03 04:23:17,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:17,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071180648] [2021-11-03 04:23:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:17,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:17,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:17,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:17,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:23:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:18,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:23:18,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:18,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:18,467 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:18,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071180648] [2021-11-03 04:23:18,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071180648] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:18,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:18,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:23:18,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939172338] [2021-11-03 04:23:18,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:23:18,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:23:18,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:23:18,510 INFO L87 Difference]: Start difference. First operand has 6907 states, 6901 states have (on average 1.893058976959861) internal successors, (13064), 6906 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-11-03 04:23:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:18,684 INFO L93 Difference]: Finished difference Result 6926 states and 13087 transitions. [2021-11-03 04:23:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:23:18,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 04:23:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:18,746 INFO L225 Difference]: With dead ends: 6926 [2021-11-03 04:23:18,747 INFO L226 Difference]: Without dead ends: 6903 [2021-11-03 04:23:18,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:23:18,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6903 states. [2021-11-03 04:23:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6903 to 6903. [2021-11-03 04:23:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 6898 states have (on average 1.8921426500434908) internal successors, (13052), 6902 states have internal predecessors, (13052), 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) [2021-11-03 04:23:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 13052 transitions. [2021-11-03 04:23:19,235 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 13052 transitions. Word has length 36 [2021-11-03 04:23:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:19,238 INFO L470 AbstractCegarLoop]: Abstraction has 6903 states and 13052 transitions. [2021-11-03 04:23:19,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2021-11-03 04:23:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 13052 transitions. [2021-11-03 04:23:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:23:19,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:19,246 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] [2021-11-03 04:23:19,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:19,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:19,467 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)] === [2021-11-03 04:23:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 215781998, now seen corresponding path program 1 times [2021-11-03 04:23:19,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:19,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665558445] [2021-11-03 04:23:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:19,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:19,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:19,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:19,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:23:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:19,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:19,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:19,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:20,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:20,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665558445] [2021-11-03 04:23:20,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665558445] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:20,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:20,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:23:20,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077886345] [2021-11-03 04:23:20,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:20,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:20,088 INFO L87 Difference]: Start difference. First operand 6903 states and 13052 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-03 04:23:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:20,864 INFO L93 Difference]: Finished difference Result 20629 states and 39013 transitions. [2021-11-03 04:23:20,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:20,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 [2021-11-03 04:23:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:20,958 INFO L225 Difference]: With dead ends: 20629 [2021-11-03 04:23:20,959 INFO L226 Difference]: Without dead ends: 13739 [2021-11-03 04:23:20,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13739 states. [2021-11-03 04:23:21,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13739 to 6903. [2021-11-03 04:23:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 6898 states have (on average 1.8911278631487387) internal successors, (13045), 6902 states have internal predecessors, (13045), 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) [2021-11-03 04:23:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 13045 transitions. [2021-11-03 04:23:21,468 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 13045 transitions. Word has length 38 [2021-11-03 04:23:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:21,468 INFO L470 AbstractCegarLoop]: Abstraction has 6903 states and 13045 transitions. [2021-11-03 04:23:21,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-03 04:23:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 13045 transitions. [2021-11-03 04:23:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:23:21,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:21,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:21,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:21,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:21,689 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)] === [2021-11-03 04:23:21,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:21,689 INFO L85 PathProgramCache]: Analyzing trace with hash 294599217, now seen corresponding path program 1 times [2021-11-03 04:23:21,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:21,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588087548] [2021-11-03 04:23:21,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:21,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:21,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:21,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:21,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:23:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:22,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:23:22,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:22,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:22,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:22,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588087548] [2021-11-03 04:23:22,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588087548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:22,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:22,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:23:22,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520300653] [2021-11-03 04:23:22,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:22,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:22,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:22,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:22,294 INFO L87 Difference]: Start difference. First operand 6903 states and 13045 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-11-03 04:23:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:25,050 INFO L93 Difference]: Finished difference Result 47796 states and 90367 transitions. [2021-11-03 04:23:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:23:25,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 04:23:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:25,214 INFO L225 Difference]: With dead ends: 47796 [2021-11-03 04:23:25,214 INFO L226 Difference]: Without dead ends: 40915 [2021-11-03 04:23:25,237 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:23:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40915 states. [2021-11-03 04:23:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40915 to 6881. [2021-11-03 04:23:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6881 states, 6876 states have (on average 1.889761489237929) internal successors, (12994), 6880 states have internal predecessors, (12994), 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) [2021-11-03 04:23:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 12994 transitions. [2021-11-03 04:23:25,968 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 12994 transitions. Word has length 44 [2021-11-03 04:23:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:25,969 INFO L470 AbstractCegarLoop]: Abstraction has 6881 states and 12994 transitions. [2021-11-03 04:23:25,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2021-11-03 04:23:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 12994 transitions. [2021-11-03 04:23:25,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:23:25,974 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:25,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:25,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:26,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:26,191 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)] === [2021-11-03 04:23:26,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:26,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1838934256, now seen corresponding path program 1 times [2021-11-03 04:23:26,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:26,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850388947] [2021-11-03 04:23:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:26,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:26,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:26,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:26,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:23:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:26,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:26,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:26,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:26,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:26,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:26,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850388947] [2021-11-03 04:23:26,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850388947] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:26,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:26,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:23:26,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294092830] [2021-11-03 04:23:26,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:26,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:26,890 INFO L87 Difference]: Start difference. First operand 6881 states and 12994 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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) [2021-11-03 04:23:27,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:27,715 INFO L93 Difference]: Finished difference Result 20540 states and 38817 transitions. [2021-11-03 04:23:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:27,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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 46 [2021-11-03 04:23:27,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:27,748 INFO L225 Difference]: With dead ends: 20540 [2021-11-03 04:23:27,748 INFO L226 Difference]: Without dead ends: 13681 [2021-11-03 04:23:27,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13681 states. [2021-11-03 04:23:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13681 to 6881. [2021-11-03 04:23:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6881 states, 6876 states have (on average 1.8881617219313553) internal successors, (12983), 6880 states have internal predecessors, (12983), 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) [2021-11-03 04:23:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 12983 transitions. [2021-11-03 04:23:28,100 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 12983 transitions. Word has length 46 [2021-11-03 04:23:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:28,101 INFO L470 AbstractCegarLoop]: Abstraction has 6881 states and 12983 transitions. [2021-11-03 04:23:28,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 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) [2021-11-03 04:23:28,101 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 12983 transitions. [2021-11-03 04:23:28,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:23:28,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:28,102 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:28,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:28,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:28,316 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)] === [2021-11-03 04:23:28,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash -214067205, now seen corresponding path program 1 times [2021-11-03 04:23:28,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:28,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154315811] [2021-11-03 04:23:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:28,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:28,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:28,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:28,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:23:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:28,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:23:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:28,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:29,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:29,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154315811] [2021-11-03 04:23:29,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154315811] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:29,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:29,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:29,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724582026] [2021-11-03 04:23:29,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:29,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:29,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:29,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:29,004 INFO L87 Difference]: Start difference. First operand 6881 states and 12983 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-03 04:23:33,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:33,418 INFO L93 Difference]: Finished difference Result 74935 states and 141647 transitions. [2021-11-03 04:23:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:23:33,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 04:23:33,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:33,614 INFO L225 Difference]: With dead ends: 74935 [2021-11-03 04:23:33,614 INFO L226 Difference]: Without dead ends: 68079 [2021-11-03 04:23:33,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68079 states. [2021-11-03 04:23:34,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68079 to 6883. [2021-11-03 04:23:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 6878 states have (on average 1.8871765047979063) internal successors, (12980), 6882 states have internal predecessors, (12980), 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) [2021-11-03 04:23:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12980 transitions. [2021-11-03 04:23:34,480 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12980 transitions. Word has length 52 [2021-11-03 04:23:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:34,481 INFO L470 AbstractCegarLoop]: Abstraction has 6883 states and 12980 transitions. [2021-11-03 04:23:34,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-03 04:23:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12980 transitions. [2021-11-03 04:23:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:23:34,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:34,483 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] [2021-11-03 04:23:34,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:34,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:34,699 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)] === [2021-11-03 04:23:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:34,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2012807608, now seen corresponding path program 1 times [2021-11-03 04:23:34,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:34,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501474632] [2021-11-03 04:23:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:34,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:34,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:34,702 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:34,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:23:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:35,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:23:35,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:35,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:35,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:35,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501474632] [2021-11-03 04:23:35,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501474632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:35,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:35,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:35,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461306702] [2021-11-03 04:23:35,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:35,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:35,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:35,448 INFO L87 Difference]: Start difference. First operand 6883 states and 12980 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:40,929 INFO L93 Difference]: Finished difference Result 74903 states and 141568 transitions. [2021-11-03 04:23:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:23:40,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 04:23:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:41,061 INFO L225 Difference]: With dead ends: 74903 [2021-11-03 04:23:41,061 INFO L226 Difference]: Without dead ends: 68047 [2021-11-03 04:23:41,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:23:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68047 states. [2021-11-03 04:23:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68047 to 6887. [2021-11-03 04:23:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 6882 states have (on average 1.8865155478058704) internal successors, (12983), 6886 states have internal predecessors, (12983), 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) [2021-11-03 04:23:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 12983 transitions. [2021-11-03 04:23:41,961 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 12983 transitions. Word has length 54 [2021-11-03 04:23:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:41,962 INFO L470 AbstractCegarLoop]: Abstraction has 6887 states and 12983 transitions. [2021-11-03 04:23:41,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 12983 transitions. [2021-11-03 04:23:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:23:41,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:41,964 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] [2021-11-03 04:23:41,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:42,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:42,179 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)] === [2021-11-03 04:23:42,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:42,180 INFO L85 PathProgramCache]: Analyzing trace with hash -838233221, now seen corresponding path program 1 times [2021-11-03 04:23:42,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:42,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468014720] [2021-11-03 04:23:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:42,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:42,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:42,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:42,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:23:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:42,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:42,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:42,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:42,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468014720] [2021-11-03 04:23:42,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468014720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:42,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:42,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:23:42,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482056254] [2021-11-03 04:23:42,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:42,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:42,883 INFO L87 Difference]: Start difference. First operand 6887 states and 12983 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-03 04:23:43,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:43,359 INFO L93 Difference]: Finished difference Result 13722 states and 25897 transitions. [2021-11-03 04:23:43,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:43,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 56 [2021-11-03 04:23:43,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:43,372 INFO L225 Difference]: With dead ends: 13722 [2021-11-03 04:23:43,372 INFO L226 Difference]: Without dead ends: 6866 [2021-11-03 04:23:43,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2021-11-03 04:23:43,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6866. [2021-11-03 04:23:43,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6866 states, 6861 states have (on average 1.8867512024486226) internal successors, (12945), 6865 states have internal predecessors, (12945), 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) [2021-11-03 04:23:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 12945 transitions. [2021-11-03 04:23:43,709 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 12945 transitions. Word has length 56 [2021-11-03 04:23:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:43,709 INFO L470 AbstractCegarLoop]: Abstraction has 6866 states and 12945 transitions. [2021-11-03 04:23:43,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-03 04:23:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 12945 transitions. [2021-11-03 04:23:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:23:43,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:43,711 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:43,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:43,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:43,926 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)] === [2021-11-03 04:23:43,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash -95272925, now seen corresponding path program 1 times [2021-11-03 04:23:43,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:43,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429368651] [2021-11-03 04:23:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:43,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:43,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:43,928 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:43,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:23:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:44,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:23:44,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:44,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:44,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:44,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429368651] [2021-11-03 04:23:44,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429368651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:44,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:44,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:23:44,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534396693] [2021-11-03 04:23:44,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:44,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:44,650 INFO L87 Difference]: Start difference. First operand 6866 states and 12945 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2021-11-03 04:23:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:45,137 INFO L93 Difference]: Finished difference Result 13666 states and 25800 transitions. [2021-11-03 04:23:45,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:45,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 04:23:45,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:45,149 INFO L225 Difference]: With dead ends: 13666 [2021-11-03 04:23:45,149 INFO L226 Difference]: Without dead ends: 6841 [2021-11-03 04:23:45,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:23:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6841 states. [2021-11-03 04:23:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6841 to 6841. [2021-11-03 04:23:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6841 states, 6836 states have (on average 1.8872147454651844) internal successors, (12901), 6840 states have internal predecessors, (12901), 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) [2021-11-03 04:23:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6841 states to 6841 states and 12901 transitions. [2021-11-03 04:23:45,521 INFO L78 Accepts]: Start accepts. Automaton has 6841 states and 12901 transitions. Word has length 57 [2021-11-03 04:23:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:45,521 INFO L470 AbstractCegarLoop]: Abstraction has 6841 states and 12901 transitions. [2021-11-03 04:23:45,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2021-11-03 04:23:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6841 states and 12901 transitions. [2021-11-03 04:23:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:23:45,523 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:45,523 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] [2021-11-03 04:23:45,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:45,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:45,744 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)] === [2021-11-03 04:23:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1507573612, now seen corresponding path program 1 times [2021-11-03 04:23:45,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:45,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993948378] [2021-11-03 04:23:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:45,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:45,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:45,746 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:45,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:23:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:46,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:46,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:46,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:46,432 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:46,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993948378] [2021-11-03 04:23:46,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993948378] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:46,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:46,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:23:46,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414800583] [2021-11-03 04:23:46,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:46,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:46,434 INFO L87 Difference]: Start difference. First operand 6841 states and 12901 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-03 04:23:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:46,834 INFO L93 Difference]: Finished difference Result 13641 states and 25756 transitions. [2021-11-03 04:23:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 [2021-11-03 04:23:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:46,843 INFO L225 Difference]: With dead ends: 13641 [2021-11-03 04:23:46,843 INFO L226 Difference]: Without dead ends: 6838 [2021-11-03 04:23:46,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:46,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2021-11-03 04:23:47,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 6838. [2021-11-03 04:23:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 6833 states have (on average 1.886872530367335) internal successors, (12893), 6837 states have internal predecessors, (12893), 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) [2021-11-03 04:23:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 12893 transitions. [2021-11-03 04:23:47,192 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 12893 transitions. Word has length 58 [2021-11-03 04:23:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:47,192 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 12893 transitions. [2021-11-03 04:23:47,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-03 04:23:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 12893 transitions. [2021-11-03 04:23:47,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:23:47,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:47,194 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] [2021-11-03 04:23:47,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:47,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:47,394 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)] === [2021-11-03 04:23:47,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash 28509533, now seen corresponding path program 1 times [2021-11-03 04:23:47,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:47,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173072823] [2021-11-03 04:23:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:47,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:47,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:47,397 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:47,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:23:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:47,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:23:47,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:47,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:48,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:48,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173072823] [2021-11-03 04:23:48,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173072823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:48,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:48,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:48,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079128014] [2021-11-03 04:23:48,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:48,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:48,142 INFO L87 Difference]: Start difference. First operand 6838 states and 12893 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) [2021-11-03 04:23:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:48,611 INFO L93 Difference]: Finished difference Result 13632 states and 25738 transitions. [2021-11-03 04:23:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:23:48,611 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 59 [2021-11-03 04:23:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:48,619 INFO L225 Difference]: With dead ends: 13632 [2021-11-03 04:23:48,620 INFO L226 Difference]: Without dead ends: 6836 [2021-11-03 04:23:48,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:23:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2021-11-03 04:23:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 6836. [2021-11-03 04:23:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6836 states, 6831 states have (on average 1.8865466256770604) internal successors, (12887), 6835 states have internal predecessors, (12887), 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) [2021-11-03 04:23:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6836 states to 6836 states and 12887 transitions. [2021-11-03 04:23:49,035 INFO L78 Accepts]: Start accepts. Automaton has 6836 states and 12887 transitions. Word has length 59 [2021-11-03 04:23:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:49,035 INFO L470 AbstractCegarLoop]: Abstraction has 6836 states and 12887 transitions. [2021-11-03 04:23:49,036 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) [2021-11-03 04:23:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 6836 states and 12887 transitions. [2021-11-03 04:23:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:23:49,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:49,037 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] [2021-11-03 04:23:49,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:49,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:49,253 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)] === [2021-11-03 04:23:49,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:49,254 INFO L85 PathProgramCache]: Analyzing trace with hash -285887087, now seen corresponding path program 1 times [2021-11-03 04:23:49,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:49,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283252387] [2021-11-03 04:23:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:49,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:49,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:49,255 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:49,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:23:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:49,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:23:49,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:49,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:50,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:50,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283252387] [2021-11-03 04:23:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283252387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:50,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:50,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:50,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116036043] [2021-11-03 04:23:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:50,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:50,079 INFO L87 Difference]: Start difference. First operand 6836 states and 12887 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-03 04:23:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:50,583 INFO L93 Difference]: Finished difference Result 13625 states and 25723 transitions. [2021-11-03 04:23:50,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:23:50,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 60 [2021-11-03 04:23:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:50,590 INFO L225 Difference]: With dead ends: 13625 [2021-11-03 04:23:50,591 INFO L226 Difference]: Without dead ends: 6834 [2021-11-03 04:23:50,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:23:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2021-11-03 04:23:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 6834. [2021-11-03 04:23:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 6829 states have (on average 1.8862205300922537) internal successors, (12881), 6833 states have internal predecessors, (12881), 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) [2021-11-03 04:23:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 12881 transitions. [2021-11-03 04:23:51,019 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 12881 transitions. Word has length 60 [2021-11-03 04:23:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:51,019 INFO L470 AbstractCegarLoop]: Abstraction has 6834 states and 12881 transitions. [2021-11-03 04:23:51,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-03 04:23:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 12881 transitions. [2021-11-03 04:23:51,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:23:51,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:51,020 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] [2021-11-03 04:23:51,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:51,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:51,222 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)] === [2021-11-03 04:23:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2003476206, now seen corresponding path program 1 times [2021-11-03 04:23:51,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:51,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092052861] [2021-11-03 04:23:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:51,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:51,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:51,224 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:51,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:23:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:51,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:51,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:52,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:52,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:52,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092052861] [2021-11-03 04:23:52,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092052861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:52,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:52,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:23:52,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402278024] [2021-11-03 04:23:52,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:52,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:52,372 INFO L87 Difference]: Start difference. First operand 6834 states and 12881 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-03 04:23:53,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:53,860 INFO L93 Difference]: Finished difference Result 17653 states and 33348 transitions. [2021-11-03 04:23:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:53,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 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 61 [2021-11-03 04:23:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:53,878 INFO L225 Difference]: With dead ends: 17653 [2021-11-03 04:23:53,878 INFO L226 Difference]: Without dead ends: 14204 [2021-11-03 04:23:53,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14204 states. [2021-11-03 04:23:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14204 to 8921. [2021-11-03 04:23:54,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8921 states, 8916 states have (on average 1.8882907133243607) internal successors, (16836), 8920 states have internal predecessors, (16836), 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) [2021-11-03 04:23:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16836 transitions. [2021-11-03 04:23:54,379 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16836 transitions. Word has length 61 [2021-11-03 04:23:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:54,380 INFO L470 AbstractCegarLoop]: Abstraction has 8921 states and 16836 transitions. [2021-11-03 04:23:54,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-03 04:23:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16836 transitions. [2021-11-03 04:23:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 04:23:54,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:54,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:54,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:54,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:54,600 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)] === [2021-11-03 04:23:54,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1864796415, now seen corresponding path program 1 times [2021-11-03 04:23:54,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:54,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447429175] [2021-11-03 04:23:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:54,602 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:54,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:54,603 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:54,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:23:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:55,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:55,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:55,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:55,640 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:55,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447429175] [2021-11-03 04:23:55,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447429175] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:55,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:55,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:23:55,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276477981] [2021-11-03 04:23:55,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:55,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:55,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:55,642 INFO L87 Difference]: Start difference. First operand 8921 states and 16836 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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) [2021-11-03 04:23:56,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:56,525 INFO L93 Difference]: Finished difference Result 16748 states and 31406 transitions. [2021-11-03 04:23:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:23:56,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 79 [2021-11-03 04:23:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:56,535 INFO L225 Difference]: With dead ends: 16748 [2021-11-03 04:23:56,535 INFO L226 Difference]: Without dead ends: 9045 [2021-11-03 04:23:56,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:23:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9045 states. [2021-11-03 04:23:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9045 to 6261. [2021-11-03 04:23:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 6256 states have (on average 1.8804347826086956) internal successors, (11764), 6260 states have internal predecessors, (11764), 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) [2021-11-03 04:23:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 11764 transitions. [2021-11-03 04:23:56,850 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 11764 transitions. Word has length 79 [2021-11-03 04:23:56,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:56,851 INFO L470 AbstractCegarLoop]: Abstraction has 6261 states and 11764 transitions. [2021-11-03 04:23:56,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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) [2021-11-03 04:23:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 11764 transitions. [2021-11-03 04:23:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 04:23:56,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:56,854 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:56,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:57,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:57,072 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:23:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2114424974, now seen corresponding path program 1 times [2021-11-03 04:23:57,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:57,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575057708] [2021-11-03 04:23:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:57,073 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:57,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:57,074 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:57,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:23:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:57,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:57,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:58,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:59,969 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:59,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575057708] [2021-11-03 04:23:59,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575057708] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:59,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:59,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:23:59,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093201858] [2021-11-03 04:23:59,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:59,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:59,971 INFO L87 Difference]: Start difference. First operand 6261 states and 11764 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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) [2021-11-03 04:24:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:03,984 INFO L93 Difference]: Finished difference Result 19682 states and 37097 transitions. [2021-11-03 04:24:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:24:03,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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 80 [2021-11-03 04:24:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:04,004 INFO L225 Difference]: With dead ends: 19682 [2021-11-03 04:24:04,004 INFO L226 Difference]: Without dead ends: 13486 [2021-11-03 04:24:04,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:24:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2021-11-03 04:24:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 8641. [2021-11-03 04:24:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8641 states, 8636 states have (on average 1.8816581750810562) internal successors, (16250), 8640 states have internal predecessors, (16250), 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) [2021-11-03 04:24:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8641 states to 8641 states and 16250 transitions. [2021-11-03 04:24:04,501 INFO L78 Accepts]: Start accepts. Automaton has 8641 states and 16250 transitions. Word has length 80 [2021-11-03 04:24:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:04,501 INFO L470 AbstractCegarLoop]: Abstraction has 8641 states and 16250 transitions. [2021-11-03 04:24:04,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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) [2021-11-03 04:24:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8641 states and 16250 transitions. [2021-11-03 04:24:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:24:04,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:04,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:04,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:04,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:04,705 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash 711684128, now seen corresponding path program 1 times [2021-11-03 04:24:04,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:04,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691822158] [2021-11-03 04:24:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:04,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:04,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:04,708 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:04,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:24:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:05,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:24:05,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:05,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:05,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:05,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691822158] [2021-11-03 04:24:05,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691822158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:05,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:05,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:24:05,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74350323] [2021-11-03 04:24:05,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:24:05,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:05,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:24:05,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:24:05,892 INFO L87 Difference]: Start difference. First operand 8641 states and 16250 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-03 04:24:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:13,305 INFO L93 Difference]: Finished difference Result 37574 states and 70437 transitions. [2021-11-03 04:24:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:24:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2021-11-03 04:24:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:13,360 INFO L225 Difference]: With dead ends: 37574 [2021-11-03 04:24:13,360 INFO L226 Difference]: Without dead ends: 28997 [2021-11-03 04:24:13,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:24:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28997 states. [2021-11-03 04:24:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28997 to 8655. [2021-11-03 04:24:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8655 states, 8650 states have (on average 1.8802312138728323) internal successors, (16264), 8654 states have internal predecessors, (16264), 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) [2021-11-03 04:24:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8655 states to 8655 states and 16264 transitions. [2021-11-03 04:24:14,266 INFO L78 Accepts]: Start accepts. Automaton has 8655 states and 16264 transitions. Word has length 81 [2021-11-03 04:24:14,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:14,267 INFO L470 AbstractCegarLoop]: Abstraction has 8655 states and 16264 transitions. [2021-11-03 04:24:14,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 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) [2021-11-03 04:24:14,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8655 states and 16264 transitions. [2021-11-03 04:24:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:24:14,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:14,272 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:14,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:14,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:14,486 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:14,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -645716240, now seen corresponding path program 1 times [2021-11-03 04:24:14,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:14,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333923466] [2021-11-03 04:24:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:14,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:14,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:14,490 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:14,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:24:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:15,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:24:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:15,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:15,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:15,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333923466] [2021-11-03 04:24:15,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333923466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:15,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:15,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:24:15,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370473172] [2021-11-03 04:24:15,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:24:15,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:24:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:24:15,893 INFO L87 Difference]: Start difference. First operand 8655 states and 16264 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-03 04:24:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:22,571 INFO L93 Difference]: Finished difference Result 26839 states and 50201 transitions. [2021-11-03 04:24:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:24:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 04:24:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:22,598 INFO L225 Difference]: With dead ends: 26839 [2021-11-03 04:24:22,598 INFO L226 Difference]: Without dead ends: 18235 [2021-11-03 04:24:22,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:24:22,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18235 states. [2021-11-03 04:24:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18235 to 10812. [2021-11-03 04:24:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10812 states, 10807 states have (on average 1.8434348107707967) internal successors, (19922), 10811 states have internal predecessors, (19922), 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) [2021-11-03 04:24:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10812 states to 10812 states and 19922 transitions. [2021-11-03 04:24:23,344 INFO L78 Accepts]: Start accepts. Automaton has 10812 states and 19922 transitions. Word has length 82 [2021-11-03 04:24:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:23,344 INFO L470 AbstractCegarLoop]: Abstraction has 10812 states and 19922 transitions. [2021-11-03 04:24:23,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 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) [2021-11-03 04:24:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 10812 states and 19922 transitions. [2021-11-03 04:24:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:24:23,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:23,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:23,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:23,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:23,562 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:23,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:23,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1694200438, now seen corresponding path program 1 times [2021-11-03 04:24:23,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:23,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105272799] [2021-11-03 04:24:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:23,563 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:23,564 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:23,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:24:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:24,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:24:24,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:24,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:24,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:24,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:24,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105272799] [2021-11-03 04:24:24,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105272799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:24,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:24,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:24:24,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810618659] [2021-11-03 04:24:24,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:24:24,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:24:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:24:24,979 INFO L87 Difference]: Start difference. First operand 10812 states and 19922 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:30,014 INFO L93 Difference]: Finished difference Result 75977 states and 140591 transitions. [2021-11-03 04:24:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:24:30,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-03 04:24:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:30,115 INFO L225 Difference]: With dead ends: 75977 [2021-11-03 04:24:30,115 INFO L226 Difference]: Without dead ends: 65225 [2021-11-03 04:24:30,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:24:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65225 states. [2021-11-03 04:24:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65225 to 17165. [2021-11-03 04:24:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 17160 states have (on average 1.8444638694638695) internal successors, (31651), 17164 states have internal predecessors, (31651), 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) [2021-11-03 04:24:31,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 31651 transitions. [2021-11-03 04:24:31,757 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 31651 transitions. Word has length 84 [2021-11-03 04:24:31,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:31,757 INFO L470 AbstractCegarLoop]: Abstraction has 17165 states and 31651 transitions. [2021-11-03 04:24:31,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 31651 transitions. [2021-11-03 04:24:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 04:24:31,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:31,760 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:31,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:31,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:31,970 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:31,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash 147466529, now seen corresponding path program 1 times [2021-11-03 04:24:31,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:31,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866287582] [2021-11-03 04:24:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:31,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:31,972 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:31,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:24:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:32,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:24:32,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:32,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:33,234 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:33,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866287582] [2021-11-03 04:24:33,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866287582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:33,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:33,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:24:33,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263076284] [2021-11-03 04:24:33,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:24:33,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:33,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:24:33,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:24:33,236 INFO L87 Difference]: Start difference. First operand 17165 states and 31651 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2021-11-03 04:24:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:35,310 INFO L93 Difference]: Finished difference Result 45103 states and 83272 transitions. [2021-11-03 04:24:35,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:24:35,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 85 [2021-11-03 04:24:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:35,347 INFO L225 Difference]: With dead ends: 45103 [2021-11-03 04:24:35,347 INFO L226 Difference]: Without dead ends: 29789 [2021-11-03 04:24:35,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:24:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29789 states. [2021-11-03 04:24:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29789 to 29774. [2021-11-03 04:24:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29774 states, 29769 states have (on average 1.8453424703550674) internal successors, (54934), 29773 states have internal predecessors, (54934), 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) [2021-11-03 04:24:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29774 states to 29774 states and 54934 transitions. [2021-11-03 04:24:37,214 INFO L78 Accepts]: Start accepts. Automaton has 29774 states and 54934 transitions. Word has length 85 [2021-11-03 04:24:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:37,214 INFO L470 AbstractCegarLoop]: Abstraction has 29774 states and 54934 transitions. [2021-11-03 04:24:37,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2021-11-03 04:24:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 29774 states and 54934 transitions. [2021-11-03 04:24:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:24:37,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:37,216 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:37,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:37,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:37,416 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash -984176783, now seen corresponding path program 1 times [2021-11-03 04:24:37,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:37,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988399132] [2021-11-03 04:24:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:37,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:37,419 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:37,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:24:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:38,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:24:38,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:38,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:38,801 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:38,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988399132] [2021-11-03 04:24:38,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988399132] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:38,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:38,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:24:38,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347392582] [2021-11-03 04:24:38,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:24:38,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:38,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:24:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:24:38,803 INFO L87 Difference]: Start difference. First operand 29774 states and 54934 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2021-11-03 04:24:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:42,890 INFO L93 Difference]: Finished difference Result 81689 states and 150811 transitions. [2021-11-03 04:24:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:24:42,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2021-11-03 04:24:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:42,987 INFO L225 Difference]: With dead ends: 81689 [2021-11-03 04:24:42,988 INFO L226 Difference]: Without dead ends: 54838 [2021-11-03 04:24:43,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:24:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54838 states. [2021-11-03 04:24:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54838 to 54823. [2021-11-03 04:24:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54823 states, 54818 states have (on average 1.8453792549892372) internal successors, (101160), 54822 states have internal predecessors, (101160), 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) [2021-11-03 04:24:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54823 states to 54823 states and 101160 transitions. [2021-11-03 04:24:46,957 INFO L78 Accepts]: Start accepts. Automaton has 54823 states and 101160 transitions. Word has length 86 [2021-11-03 04:24:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:46,957 INFO L470 AbstractCegarLoop]: Abstraction has 54823 states and 101160 transitions. [2021-11-03 04:24:46,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2021-11-03 04:24:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 54823 states and 101160 transitions. [2021-11-03 04:24:46,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 04:24:46,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:46,960 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:24:46,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:47,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:47,160 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:24:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 223474022, now seen corresponding path program 1 times [2021-11-03 04:24:47,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:47,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74633787] [2021-11-03 04:24:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:47,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:47,162 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:47,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3dab4ff4-3c59-4d56-ac9e-85fb4dbf7a99/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 04:24:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:48,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:24:48,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:48,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:48,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:24:48,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:48,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74633787] [2021-11-03 04:24:48,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74633787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:48,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:48,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:24:48,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806048680] [2021-11-03 04:24:48,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:24:48,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:24:48,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:24:48,529 INFO L87 Difference]: Start difference. First operand 54823 states and 101160 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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)