./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:00,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:00,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:01,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:01,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:01,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:01,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:01,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:01,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:01,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:01,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:01,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:01,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:01,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:01,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:01,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:01,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:01,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:01,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:01,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:01,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:01,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:01,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:01,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:01,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:01,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:01,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:01,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:01,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:01,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:01,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:01,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:01,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:01,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:01,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:01,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:01,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:01,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:01,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:01,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:01,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:01,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:21:01,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:01,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:01,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:01,125 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:01,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:01,125 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:01,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:21:01,126 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:01,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:01,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:21:01,127 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:21:01,127 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:01,127 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:21:01,127 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:21:01,128 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:21:01,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:01,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:21:01,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:21:01,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:21:01,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:01,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:01,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:01,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:01,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:01,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:21:01,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:01,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:01,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:01,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:01,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:01,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:01,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:01,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:01,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:01,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:21:01,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:21:01,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:01,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:01,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:01,135 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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2021-11-03 04:21:01,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:01,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:01,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:01,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:01,467 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:01,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-03 04:21:01,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/b5bcb7a98/06d8cede8a104036b553a462281990b6/FLAG89d9e18b8 [2021-11-03 04:21:02,271 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:02,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-03 04:21:02,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/b5bcb7a98/06d8cede8a104036b553a462281990b6/FLAG89d9e18b8 [2021-11-03 04:21:02,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/b5bcb7a98/06d8cede8a104036b553a462281990b6 [2021-11-03 04:21:02,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:02,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:02,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:02,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:02,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:02,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:02" (1/1) ... [2021-11-03 04:21:02,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd7e104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:02, skipping insertion in model container [2021-11-03 04:21:02,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:02" (1/1) ... [2021-11-03 04:21:02,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:02,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:02,898 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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-03 04:21:03,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:03,331 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 04:21:03,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@421bd197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:03, skipping insertion in model container [2021-11-03 04:21:03,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:03,333 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:21:03,336 INFO L168 Benchmark]: Toolchain (without parser) took 884.27 ms. Allocated memory is still 88.1 MB. Free memory was 61.8 MB in the beginning and 49.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:03,337 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:21:03,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 881.65 ms. Allocated memory is still 88.1 MB. Free memory was 61.4 MB in the beginning and 49.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:21:03,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 881.65 ms. Allocated memory is still 88.1 MB. Free memory was 61.4 MB in the beginning and 49.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: 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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:21:06,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:21:06,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:21:06,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:21:06,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:21:06,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:21:06,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:21:06,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:21:06,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:21:06,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:21:06,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:21:06,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:21:06,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:21:06,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:21:06,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:21:06,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:21:06,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:21:06,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:21:06,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:21:06,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:21:06,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:21:06,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:21:06,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:21:06,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:21:06,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:21:06,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:21:06,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:21:06,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:21:06,484 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:21:06,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:21:06,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:21:06,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:21:06,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:21:06,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:21:06,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:21:06,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:21:06,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:21:06,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:21:06,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:21:06,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:21:06,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:21:06,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:21:06,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:21:06,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:21:06,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:21:06,544 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:21:06,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:21:06,545 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:21:06,545 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:21:06,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:21:06,545 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:21:06,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:21:06,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:21:06,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:21:06,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:21:06,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:21:06,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:21:06,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:21:06,550 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:21:06,550 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:21:06,550 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:21:06,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:21:06,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:21:06,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:21:06,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:21:06,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:21:06,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:21:06,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:21:06,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:06,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:21:06,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:21:06,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:21:06,553 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:21:06,553 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:21:06,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:21:06,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:21:06,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:21:06,555 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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2021-11-03 04:21:07,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:21:07,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:21:07,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:21:07,075 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:21:07,076 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:21:07,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-03 04:21:07,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/2fcd0f16c/5c0927eb22804885b34e73da40a6addd/FLAGf4996e2ee [2021-11-03 04:21:08,203 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:21:08,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2021-11-03 04:21:08,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/2fcd0f16c/5c0927eb22804885b34e73da40a6addd/FLAGf4996e2ee [2021-11-03 04:21:08,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/data/2fcd0f16c/5c0927eb22804885b34e73da40a6addd [2021-11-03 04:21:08,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:21:08,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:21:08,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:08,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:21:08,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:21:08,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:08" (1/1) ... [2021-11-03 04:21:08,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fac12b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:08, skipping insertion in model container [2021-11-03 04:21:08,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:21:08" (1/1) ... [2021-11-03 04:21:08,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:21:08,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:08,711 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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-03 04:21:09,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:09,045 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:21:09,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:21:09,168 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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-03 04:21:09,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:09,358 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:21:09,412 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_df4329b8-ee70-45e8-a39c-b76f0bcae90d/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2021-11-03 04:21:09,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:21:09,595 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:21:09,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09 WrapperNode [2021-11-03 04:21:09,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:21:09,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:09,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:21:09,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:21:09,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:09,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:10,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:21:10,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:21:10,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:21:10,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:21:10,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:10,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:10,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:10,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:10,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:11,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:11,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:11,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:21:11,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:21:11,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:21:11,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:21:11,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (1/1) ... [2021-11-03 04:21:11,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:21:11,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:21:11,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:21:11,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:21:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:21:11,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:21:11,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:21:11,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:21:32,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:21:32,350 INFO L299 CfgBuilder]: Removed 1553 assume(true) statements. [2021-11-03 04:21:32,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:32 BoogieIcfgContainer [2021-11-03 04:21:32,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:21:32,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:21:32,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:21:32,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:21:32,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:21:08" (1/3) ... [2021-11-03 04:21:32,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3546aa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:32, skipping insertion in model container [2021-11-03 04:21:32,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:21:09" (2/3) ... [2021-11-03 04:21:32,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3546aa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:21:32, skipping insertion in model container [2021-11-03 04:21:32,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:21:32" (3/3) ... [2021-11-03 04:21:32,369 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2021-11-03 04:21:32,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:21:32,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:21:32,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:21:32,459 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 04:21:32,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:21:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 6968 states, 6962 states have (on average 1.895288710140764) internal successors, (13195), 6967 states have internal predecessors, (13195), 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 04:21:32,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:21:32,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:32,602 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] [2021-11-03 04:21:32,603 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 04:21:32,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash 210076529, now seen corresponding path program 1 times [2021-11-03 04:21:32,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:32,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587603495] [2021-11-03 04:21:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:32,626 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:32,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:32,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:32,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:21:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:33,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:21:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:33,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:33,299 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 04:21:33,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:33,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587603495] [2021-11-03 04:21:33,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587603495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:33,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:33,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:21:33,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121102465] [2021-11-03 04:21:33,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:21:33,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:21:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:21:33,353 INFO L87 Difference]: Start difference. First operand has 6968 states, 6962 states have (on average 1.895288710140764) internal successors, (13195), 6967 states have internal predecessors, (13195), 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 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 04:21:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:33,641 INFO L93 Difference]: Finished difference Result 6987 states and 13218 transitions. [2021-11-03 04:21:33,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:21:33,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2021-11-03 04:21:33,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:33,902 INFO L225 Difference]: With dead ends: 6987 [2021-11-03 04:21:33,903 INFO L226 Difference]: Without dead ends: 6964 [2021-11-03 04:21:33,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 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 04:21:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2021-11-03 04:21:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2021-11-03 04:21:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6959 states have (on average 1.8943813766345738) internal successors, (13183), 6963 states have internal predecessors, (13183), 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 04:21:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 13183 transitions. [2021-11-03 04:21:34,320 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 13183 transitions. Word has length 26 [2021-11-03 04:21:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:34,323 INFO L470 AbstractCegarLoop]: Abstraction has 6964 states and 13183 transitions. [2021-11-03 04:21:34,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 04:21:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 13183 transitions. [2021-11-03 04:21:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:21:34,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:34,337 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] [2021-11-03 04:21:34,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:34,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:34,552 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 04:21:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1237831974, now seen corresponding path program 1 times [2021-11-03 04:21:34,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:34,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204414598] [2021-11-03 04:21:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:34,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:34,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:34,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:34,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:21:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:35,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:21:35,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:35,233 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 04:21:35,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:35,339 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 04:21:35,339 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:35,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204414598] [2021-11-03 04:21:35,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204414598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:35,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:35,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:21:35,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403971020] [2021-11-03 04:21:35,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:21:35,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:35,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:21:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:35,352 INFO L87 Difference]: Start difference. First operand 6964 states and 13183 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 04:21:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:35,777 INFO L93 Difference]: Finished difference Result 13915 states and 26347 transitions. [2021-11-03 04:21:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:21:35,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 28 [2021-11-03 04:21:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:35,834 INFO L225 Difference]: With dead ends: 13915 [2021-11-03 04:21:35,834 INFO L226 Difference]: Without dead ends: 6964 [2021-11-03 04:21:35,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 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 04:21:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6964 states. [2021-11-03 04:21:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6964 to 6964. [2021-11-03 04:21:36,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6959 states have (on average 1.8935191837907746) internal successors, (13177), 6963 states have internal predecessors, (13177), 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 04:21:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 13177 transitions. [2021-11-03 04:21:36,312 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 13177 transitions. Word has length 28 [2021-11-03 04:21:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:36,312 INFO L470 AbstractCegarLoop]: Abstraction has 6964 states and 13177 transitions. [2021-11-03 04:21:36,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 04:21:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 13177 transitions. [2021-11-03 04:21:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:21:36,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:36,316 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:36,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:36,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:36,529 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 04:21:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash -982746192, now seen corresponding path program 1 times [2021-11-03 04:21:36,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:36,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365015542] [2021-11-03 04:21:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:36,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:36,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:36,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:36,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:21:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:37,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:21:37,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:37,160 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 04:21:37,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:37,307 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 04:21:37,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:37,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365015542] [2021-11-03 04:21:37,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365015542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:37,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:37,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:21:37,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130253155] [2021-11-03 04:21:37,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:21:37,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:21:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:21:37,316 INFO L87 Difference]: Start difference. First operand 6964 states and 13177 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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 04:21:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:38,094 INFO L93 Difference]: Finished difference Result 13879 states and 26270 transitions. [2021-11-03 04:21:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:21:38,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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 33 [2021-11-03 04:21:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:38,153 INFO L225 Difference]: With dead ends: 13879 [2021-11-03 04:21:38,153 INFO L226 Difference]: Without dead ends: 6937 [2021-11-03 04:21:38,166 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 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 04:21:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2021-11-03 04:21:38,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6937. [2021-11-03 04:21:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 6932 states have (on average 1.8928159261396422) internal successors, (13121), 6936 states have internal predecessors, (13121), 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 04:21:38,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 13121 transitions. [2021-11-03 04:21:38,505 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 13121 transitions. Word has length 33 [2021-11-03 04:21:38,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:38,506 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 13121 transitions. [2021-11-03 04:21:38,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 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 04:21:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 13121 transitions. [2021-11-03 04:21:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:21:38,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:38,512 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] [2021-11-03 04:21:38,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:38,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:38,729 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 04:21:38,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash -394981934, now seen corresponding path program 1 times [2021-11-03 04:21:38,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:38,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501528744] [2021-11-03 04:21:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:38,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:38,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:38,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:38,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:21:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:39,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:21:39,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:39,323 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 04:21:39,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:39,468 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 04:21:39,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:39,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501528744] [2021-11-03 04:21:39,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501528744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:39,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:39,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:21:39,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973606208] [2021-11-03 04:21:39,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:21:39,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:21:39,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:39,473 INFO L87 Difference]: Start difference. First operand 6937 states and 13121 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:39,998 INFO L93 Difference]: Finished difference Result 13852 states and 26214 transitions. [2021-11-03 04:21:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:21:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:21:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:40,041 INFO L225 Difference]: With dead ends: 13852 [2021-11-03 04:21:40,048 INFO L226 Difference]: Without dead ends: 6937 [2021-11-03 04:21:40,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 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 04:21:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6937 states. [2021-11-03 04:21:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6937 to 6937. [2021-11-03 04:21:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 6932 states have (on average 1.8919503750721292) internal successors, (13115), 6936 states have internal predecessors, (13115), 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 04:21:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 13115 transitions. [2021-11-03 04:21:40,535 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 13115 transitions. Word has length 34 [2021-11-03 04:21:40,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:40,537 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 13115 transitions. [2021-11-03 04:21:40,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:40,537 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 13115 transitions. [2021-11-03 04:21:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:21:40,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:40,542 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:21:40,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:40,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:40,761 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 04:21:40,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash 707423011, now seen corresponding path program 1 times [2021-11-03 04:21:40,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:40,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518895878] [2021-11-03 04:21:40,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:40,764 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:40,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:40,766 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:40,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:21:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:41,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:21:41,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:41,482 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 04:21:41,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:21:41,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:41,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518895878] [2021-11-03 04:21:41,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518895878] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:41,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:41,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:21:41,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224086812] [2021-11-03 04:21:41,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:21:41,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:21:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:21:41,707 INFO L87 Difference]: Start difference. First operand 6937 states and 13115 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:42,496 INFO L93 Difference]: Finished difference Result 13846 states and 26197 transitions. [2021-11-03 04:21:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:21:42,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-03 04:21:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:42,540 INFO L225 Difference]: With dead ends: 13846 [2021-11-03 04:21:42,541 INFO L226 Difference]: Without dead ends: 6934 [2021-11-03 04:21:42,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 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 04:21:42,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2021-11-03 04:21:42,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 6934. [2021-11-03 04:21:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6934 states, 6929 states have (on average 1.8916149516524752) internal successors, (13107), 6933 states have internal predecessors, (13107), 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 04:21:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 13107 transitions. [2021-11-03 04:21:42,954 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 13107 transitions. Word has length 39 [2021-11-03 04:21:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:42,955 INFO L470 AbstractCegarLoop]: Abstraction has 6934 states and 13107 transitions. [2021-11-03 04:21:42,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 13107 transitions. [2021-11-03 04:21:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 04:21:42,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:42,957 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] [2021-11-03 04:21:42,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:43,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:43,174 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 04:21:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash 932455667, now seen corresponding path program 1 times [2021-11-03 04:21:43,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:43,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7827317] [2021-11-03 04:21:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:43,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:43,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:43,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:43,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:21:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:43,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:21:43,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:44,139 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 04:21:44,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:44,352 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 04:21:44,353 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:44,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7827317] [2021-11-03 04:21:44,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7827317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:44,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:44,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:21:44,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065299356] [2021-11-03 04:21:44,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:21:44,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:44,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:21:44,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:21:44,356 INFO L87 Difference]: Start difference. First operand 6934 states and 13107 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:46,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:46,081 INFO L93 Difference]: Finished difference Result 17993 states and 34069 transitions. [2021-11-03 04:21:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:21:46,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-03 04:21:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:46,135 INFO L225 Difference]: With dead ends: 17993 [2021-11-03 04:21:46,135 INFO L226 Difference]: Without dead ends: 14484 [2021-11-03 04:21:46,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 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 04:21:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14484 states. [2021-11-03 04:21:46,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14484 to 9021. [2021-11-03 04:21:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9021 states, 9016 states have (on average 1.8930789707187223) internal successors, (17068), 9020 states have internal predecessors, (17068), 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 04:21:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9021 states to 9021 states and 17068 transitions. [2021-11-03 04:21:46,640 INFO L78 Accepts]: Start accepts. Automaton has 9021 states and 17068 transitions. Word has length 40 [2021-11-03 04:21:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:46,641 INFO L470 AbstractCegarLoop]: Abstraction has 9021 states and 17068 transitions. [2021-11-03 04:21:46,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:21:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 9021 states and 17068 transitions. [2021-11-03 04:21:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:21:46,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:46,650 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 04:21:46,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:46,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:46,867 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 04:21:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash 927678500, now seen corresponding path program 1 times [2021-11-03 04:21:46,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:46,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432158053] [2021-11-03 04:21:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:46,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:46,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:46,874 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:46,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:21:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:47,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:21:47,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:47,806 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 04:21:47,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:48,079 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 04:21:48,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:48,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432158053] [2021-11-03 04:21:48,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432158053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:48,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:48,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:21:48,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419822787] [2021-11-03 04:21:48,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:21:48,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:21:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:21:48,082 INFO L87 Difference]: Start difference. First operand 9021 states and 17068 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 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 04:21:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:49,101 INFO L93 Difference]: Finished difference Result 16890 states and 31758 transitions. [2021-11-03 04:21:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:21:49,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 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 58 [2021-11-03 04:21:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:49,137 INFO L225 Difference]: With dead ends: 16890 [2021-11-03 04:21:49,137 INFO L226 Difference]: Without dead ends: 9097 [2021-11-03 04:21:49,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:21:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9097 states. [2021-11-03 04:21:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9097 to 6331. [2021-11-03 04:21:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6331 states, 6326 states have (on average 1.8877647802718938) internal successors, (11942), 6330 states have internal predecessors, (11942), 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 04:21:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6331 states to 6331 states and 11942 transitions. [2021-11-03 04:21:49,665 INFO L78 Accepts]: Start accepts. Automaton has 6331 states and 11942 transitions. Word has length 58 [2021-11-03 04:21:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:49,666 INFO L470 AbstractCegarLoop]: Abstraction has 6331 states and 11942 transitions. [2021-11-03 04:21:49,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 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 04:21:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 6331 states and 11942 transitions. [2021-11-03 04:21:49,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:21:49,671 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:49,671 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 04:21:49,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:21:49,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:21:49,885 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 04:21:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:21:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash -342036837, now seen corresponding path program 1 times [2021-11-03 04:21:49,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:21:49,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289526104] [2021-11-03 04:21:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:21:49,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:21:49,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:21:49,896 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:21:49,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:21:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:21:50,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:21:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:21:50,960 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 04:21:50,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:21:52,447 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 04:21:52,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:21:52,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289526104] [2021-11-03 04:21:52,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289526104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:21:52,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:21:52,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:21:52,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669064882] [2021-11-03 04:21:52,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:21:52,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:21:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:21:52,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:21:52,452 INFO L87 Difference]: Start difference. First operand 6331 states and 11942 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 04:21:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:21:59,134 INFO L93 Difference]: Finished difference Result 19992 states and 37785 transitions. [2021-11-03 04:21:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:21:59,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 04:21:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:21:59,197 INFO L225 Difference]: With dead ends: 19992 [2021-11-03 04:21:59,198 INFO L226 Difference]: Without dead ends: 13706 [2021-11-03 04:21:59,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:21:59,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13706 states. [2021-11-03 04:21:59,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13706 to 8711. [2021-11-03 04:21:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8711 states, 8706 states have (on average 1.8876636802205375) internal successors, (16434), 8710 states have internal predecessors, (16434), 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 04:21:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8711 states to 8711 states and 16434 transitions. [2021-11-03 04:21:59,921 INFO L78 Accepts]: Start accepts. Automaton has 8711 states and 16434 transitions. Word has length 59 [2021-11-03 04:21:59,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:21:59,922 INFO L470 AbstractCegarLoop]: Abstraction has 8711 states and 16434 transitions. [2021-11-03 04:21:59,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 04:21:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 8711 states and 16434 transitions. [2021-11-03 04:21:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:21:59,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:21:59,930 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 04:21:59,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:00,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:00,144 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 04:22:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1235686883, now seen corresponding path program 1 times [2021-11-03 04:22:00,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:00,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419688163] [2021-11-03 04:22:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:00,147 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:00,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:00,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:00,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:22:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:01,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:22:01,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:01,556 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 04:22:01,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:01,934 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 04:22:01,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:01,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419688163] [2021-11-03 04:22:01,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419688163] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:01,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:01,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:22:01,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866676473] [2021-11-03 04:22:01,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:22:01,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:22:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:22:01,939 INFO L87 Difference]: Start difference. First operand 8711 states and 16434 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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 04:22:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:10,895 INFO L93 Difference]: Finished difference Result 37974 states and 71368 transitions. [2021-11-03 04:22:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:22:10,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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 04:22:10,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:11,018 INFO L225 Difference]: With dead ends: 37974 [2021-11-03 04:22:11,018 INFO L226 Difference]: Without dead ends: 29307 [2021-11-03 04:22:11,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 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 04:22:11,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29307 states. [2021-11-03 04:22:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29307 to 8725. [2021-11-03 04:22:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8725 states, 8720 states have (on average 1.8862385321100918) internal successors, (16448), 8724 states have internal predecessors, (16448), 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 04:22:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8725 states to 8725 states and 16448 transitions. [2021-11-03 04:22:12,113 INFO L78 Accepts]: Start accepts. Automaton has 8725 states and 16448 transitions. Word has length 60 [2021-11-03 04:22:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:12,114 INFO L470 AbstractCegarLoop]: Abstraction has 8725 states and 16448 transitions. [2021-11-03 04:22:12,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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 04:22:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8725 states and 16448 transitions. [2021-11-03 04:22:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:22:12,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:12,120 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 04:22:12,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:12,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:12,342 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 04:22:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash 723322397, now seen corresponding path program 1 times [2021-11-03 04:22:12,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:12,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329299119] [2021-11-03 04:22:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:12,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:12,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:12,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:12,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:22:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:13,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:22:13,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:13,276 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 04:22:13,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:13,521 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 04:22:13,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:13,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329299119] [2021-11-03 04:22:13,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329299119] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:13,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:13,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:22:13,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367816300] [2021-11-03 04:22:13,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:22:13,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:13,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:22:13,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:22:13,526 INFO L87 Difference]: Start difference. First operand 8725 states and 16448 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 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 04:22:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:20,834 INFO L93 Difference]: Finished difference Result 27119 states and 50862 transitions. [2021-11-03 04:22:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:22:20,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 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 61 [2021-11-03 04:22:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:20,880 INFO L225 Difference]: With dead ends: 27119 [2021-11-03 04:22:20,880 INFO L226 Difference]: Without dead ends: 18425 [2021-11-03 04:22:20,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 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 04:22:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18425 states. [2021-11-03 04:22:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18425 to 10912. [2021-11-03 04:22:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 10907 states have (on average 1.8497295314935362) internal successors, (20175), 10911 states have internal predecessors, (20175), 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 04:22:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 20175 transitions. [2021-11-03 04:22:21,602 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 20175 transitions. Word has length 61 [2021-11-03 04:22:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:21,602 INFO L470 AbstractCegarLoop]: Abstraction has 10912 states and 20175 transitions. [2021-11-03 04:22:21,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 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 04:22:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 20175 transitions. [2021-11-03 04:22:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 04:22:21,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:21,606 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] [2021-11-03 04:22:21,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:21,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:21,818 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 04:22:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash 100235269, now seen corresponding path program 1 times [2021-11-03 04:22:21,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:21,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004280448] [2021-11-03 04:22:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:21,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:21,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:21,820 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:21,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:22:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:22,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:22:22,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:22,778 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 04:22:22,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:23,011 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 04:22:23,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:23,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004280448] [2021-11-03 04:22:23,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004280448] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:23,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:23,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:22:23,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796136183] [2021-11-03 04:22:23,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:22:23,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:22:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:22:23,014 INFO L87 Difference]: Start difference. First operand 10912 states and 20175 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 04:22:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:26,879 INFO L93 Difference]: Finished difference Result 76962 states and 142803 transitions. [2021-11-03 04:22:26,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:22:26,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2021-11-03 04:22:26,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:27,042 INFO L225 Difference]: With dead ends: 76962 [2021-11-03 04:22:27,042 INFO L226 Difference]: Without dead ends: 66090 [2021-11-03 04:22:27,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 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 04:22:27,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66090 states. [2021-11-03 04:22:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66090 to 17380. [2021-11-03 04:22:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17380 states, 17375 states have (on average 1.850474820143885) internal successors, (32152), 17379 states have internal predecessors, (32152), 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 04:22:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17380 states to 17380 states and 32152 transitions. [2021-11-03 04:22:28,256 INFO L78 Accepts]: Start accepts. Automaton has 17380 states and 32152 transitions. Word has length 63 [2021-11-03 04:22:28,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:28,257 INFO L470 AbstractCegarLoop]: Abstraction has 17380 states and 32152 transitions. [2021-11-03 04:22:28,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 04:22:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 17380 states and 32152 transitions. [2021-11-03 04:22:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:22:28,260 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:28,261 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] [2021-11-03 04:22:28,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:28,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:28,465 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 04:22:28,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1391874530, now seen corresponding path program 1 times [2021-11-03 04:22:28,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:28,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490062052] [2021-11-03 04:22:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:28,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:28,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:28,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:28,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:22:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:29,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:22:29,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:29,368 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 04:22:29,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:29,604 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 04:22:29,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:29,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490062052] [2021-11-03 04:22:29,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490062052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:29,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:29,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:22:29,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669722680] [2021-11-03 04:22:29,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:22:29,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:22:29,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:22:29,607 INFO L87 Difference]: Start difference. First operand 17380 states and 32152 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 04:22:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:31,385 INFO L93 Difference]: Finished difference Result 45723 states and 84661 transitions. [2021-11-03 04:22:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:22:31,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 64 [2021-11-03 04:22:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:31,446 INFO L225 Difference]: With dead ends: 45723 [2021-11-03 04:22:31,446 INFO L226 Difference]: Without dead ends: 30229 [2021-11-03 04:22:31,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 04:22:31,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30229 states. [2021-11-03 04:22:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30229 to 30214. [2021-11-03 04:22:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30214 states, 30209 states have (on average 1.8511370783541328) internal successors, (55921), 30213 states have internal predecessors, (55921), 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 04:22:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30214 states to 30214 states and 55921 transitions. [2021-11-03 04:22:33,053 INFO L78 Accepts]: Start accepts. Automaton has 30214 states and 55921 transitions. Word has length 64 [2021-11-03 04:22:33,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:33,053 INFO L470 AbstractCegarLoop]: Abstraction has 30214 states and 55921 transitions. [2021-11-03 04:22:33,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 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 04:22:33,053 INFO L276 IsEmpty]: Start isEmpty. Operand 30214 states and 55921 transitions. [2021-11-03 04:22:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-03 04:22:33,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:33,057 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] [2021-11-03 04:22:33,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:33,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:33,273 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 04:22:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:33,274 INFO L85 PathProgramCache]: Analyzing trace with hash -208564290, now seen corresponding path program 1 times [2021-11-03 04:22:33,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:33,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257124720] [2021-11-03 04:22:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:33,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:33,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:33,277 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:33,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:22:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:34,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:22:34,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:34,222 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 04:22:34,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:34,454 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 04:22:34,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:34,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257124720] [2021-11-03 04:22:34,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257124720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:34,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:34,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:22:34,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123724538] [2021-11-03 04:22:34,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:22:34,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:22:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:22:34,457 INFO L87 Difference]: Start difference. First operand 30214 states and 55921 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 04:22:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:37,524 INFO L93 Difference]: Finished difference Result 82929 states and 153542 transitions. [2021-11-03 04:22:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:22:37,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 65 [2021-11-03 04:22:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:37,665 INFO L225 Difference]: With dead ends: 82929 [2021-11-03 04:22:37,665 INFO L226 Difference]: Without dead ends: 55718 [2021-11-03 04:22:37,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 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 04:22:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55718 states. [2021-11-03 04:22:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55718 to 55703. [2021-11-03 04:22:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55703 states, 55698 states have (on average 1.8510359438399941) internal successors, (103099), 55702 states have internal predecessors, (103099), 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 04:22:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55703 states to 55703 states and 103099 transitions. [2021-11-03 04:22:42,104 INFO L78 Accepts]: Start accepts. Automaton has 55703 states and 103099 transitions. Word has length 65 [2021-11-03 04:22:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:42,104 INFO L470 AbstractCegarLoop]: Abstraction has 55703 states and 103099 transitions. [2021-11-03 04:22:42,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 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 04:22:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 55703 states and 103099 transitions. [2021-11-03 04:22:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:22:42,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:42,109 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:22:42,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:42,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:42,312 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 04:22:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash 117092989, now seen corresponding path program 1 times [2021-11-03 04:22:42,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:42,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778455062] [2021-11-03 04:22:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:42,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:42,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:42,315 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:42,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:22:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:43,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:22:43,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:43,419 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 04:22:43,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:43,685 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 04:22:43,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:43,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778455062] [2021-11-03 04:22:43,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778455062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:43,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:43,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:22:43,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756585951] [2021-11-03 04:22:43,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:22:43,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:22:43,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:22:43,689 INFO L87 Difference]: Start difference. First operand 55703 states and 103099 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:22:50,534 INFO L93 Difference]: Finished difference Result 156983 states and 290517 transitions. [2021-11-03 04:22:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:22:50,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 04:22:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:22:50,797 INFO L225 Difference]: With dead ends: 156983 [2021-11-03 04:22:50,797 INFO L226 Difference]: Without dead ends: 106291 [2021-11-03 04:22:50,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 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 04:22:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106291 states. [2021-11-03 04:22:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106291 to 106276. [2021-11-03 04:22:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106276 states, 106271 states have (on average 1.8499402471041018) internal successors, (196595), 106275 states have internal predecessors, (196595), 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 04:22:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106276 states to 106276 states and 196595 transitions. [2021-11-03 04:22:58,244 INFO L78 Accepts]: Start accepts. Automaton has 106276 states and 196595 transitions. Word has length 66 [2021-11-03 04:22:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:22:58,245 INFO L470 AbstractCegarLoop]: Abstraction has 106276 states and 196595 transitions. [2021-11-03 04:22:58,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:22:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 106276 states and 196595 transitions. [2021-11-03 04:22:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 04:22:58,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:22:58,249 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] [2021-11-03 04:22:58,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:22:58,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:22:58,450 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 04:22:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:22:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash 22187193, now seen corresponding path program 1 times [2021-11-03 04:22:58,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:22:58,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220994329] [2021-11-03 04:22:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:22:58,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:22:58,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:22:58,454 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:22:58,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df4329b8-ee70-45e8-a39c-b76f0bcae90d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:22:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:22:59,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:22:59,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:22:59,593 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 04:22:59,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:22:59,876 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 04:22:59,877 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:22:59,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220994329] [2021-11-03 04:22:59,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220994329] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:22:59,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:22:59,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:22:59,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253658640] [2021-11-03 04:22:59,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:22:59,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:22:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:22:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:22:59,880 INFO L87 Difference]: Start difference. First operand 106276 states and 196595 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)