./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.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_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/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_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/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_9058e6e4-e433-4096-9553-2fe323d944ef/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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:25,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:25,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:25,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:25,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:25,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:25,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:25,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:25,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:25,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:25,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:25,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:25,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:25,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:25,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:25,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:25,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:25,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:25,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:25,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:25,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:25,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:25,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:25,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:25,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:25,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:25,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:25,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:25,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:25,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:25,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:25,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:25,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:25,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:25,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:25,332 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:25,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:25,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:25,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:25,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:25,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:25,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:25:25,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:25,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:25,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:25,362 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:25,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:25,363 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:25,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:25:25,363 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:25,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:25,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:25:25,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:25:25,364 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:25,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:25:25,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:25:25,365 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:25:25,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:25,366 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:25:25,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:25:25,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:25:25,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:25,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:25:25,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:25,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:25:25,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:25,367 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:25:25,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:25:25,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:25,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:25:25,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:25,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:25,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:25,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:25,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:25,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:25:25,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:25:25,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:25:25,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:25:25,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:25,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:25,371 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_9058e6e4-e433-4096-9553-2fe323d944ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2021-11-03 04:25:25,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:25,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:25,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:25,618 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:25,619 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:25,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2021-11-03 04:25:25,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/d84dd0a81/09273e748aaf4b9896c492e15c4c2839/FLAGb4d2e3b5f [2021-11-03 04:25:26,364 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:26,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2021-11-03 04:25:26,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/d84dd0a81/09273e748aaf4b9896c492e15c4c2839/FLAGb4d2e3b5f [2021-11-03 04:25:26,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/d84dd0a81/09273e748aaf4b9896c492e15c4c2839 [2021-11-03 04:25:26,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:26,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:26,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:26,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:26,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:26,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:26" (1/1) ... [2021-11-03 04:25:26,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5809a957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:26, skipping insertion in model container [2021-11-03 04:25:26,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:26" (1/1) ... [2021-11-03 04:25:26,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:26,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:27,193 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_9058e6e4-e433-4096-9553-2fe323d944ef/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2021-11-03 04:25:27,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:27,285 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 04:25:27,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@128ba447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:27, skipping insertion in model container [2021-11-03 04:25:27,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:27,292 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:25:27,294 INFO L168 Benchmark]: Toolchain (without parser) took 696.31 ms. Allocated memory is still 144.7 MB. Free memory was 107.4 MB in the beginning and 106.6 MB in the end (delta: 860.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:27,296 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 58.9 MB in the beginning and 58.9 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:25:27,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 684.67 ms. Allocated memory is still 144.7 MB. Free memory was 107.4 MB in the beginning and 106.6 MB in the end (delta: 860.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:25:27,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 58.9 MB in the beginning and 58.9 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 684.67 ms. Allocated memory is still 144.7 MB. Free memory was 107.4 MB in the beginning and 106.6 MB in the end (delta: 860.8 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2979]: 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_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/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_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/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_9058e6e4-e433-4096-9553-2fe323d944ef/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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:25:29,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:25:29,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:25:29,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:25:29,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:25:29,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:25:29,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:25:29,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:25:29,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:25:29,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:25:29,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:25:29,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:25:29,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:25:29,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:25:29,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:25:29,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:25:29,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:25:29,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:25:29,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:25:29,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:25:29,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:25:29,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:25:29,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:25:29,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:25:29,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:25:29,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:25:29,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:25:29,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:25:29,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:25:29,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:25:29,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:25:29,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:25:29,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:25:29,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:25:29,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:25:29,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:25:29,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:25:29,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:25:29,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:25:29,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:25:29,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:25:29,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:25:29,570 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:25:29,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:25:29,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:25:29,571 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:25:29,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:25:29,572 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:25:29,572 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:25:29,572 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:25:29,573 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:25:29,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:25:29,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:25:29,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:25:29,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:25:29,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:25:29,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:25:29,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:25:29,576 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:25:29,577 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:25:29,577 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:25:29,577 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:25:29,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:25:29,577 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:25:29,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:25:29,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:25:29,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:25:29,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:25:29,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:29,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:25:29,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:25:29,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:25:29,579 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:25:29,580 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:25:29,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:25:29,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:25:29,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:25:29,581 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_9058e6e4-e433-4096-9553-2fe323d944ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2021-11-03 04:25:29,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:25:29,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:25:29,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:25:29,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:25:29,982 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:25:29,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2021-11-03 04:25:30,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/7be0ea56b/03df69712e1c4350bda38a9864978ae8/FLAG513f5bffa [2021-11-03 04:25:30,744 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:25:30,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2021-11-03 04:25:30,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/7be0ea56b/03df69712e1c4350bda38a9864978ae8/FLAG513f5bffa [2021-11-03 04:25:30,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/data/7be0ea56b/03df69712e1c4350bda38a9864978ae8 [2021-11-03 04:25:30,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:25:30,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:25:30,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:30,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:25:30,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:25:30,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:30" (1/1) ... [2021-11-03 04:25:30,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e74fcb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:30, skipping insertion in model container [2021-11-03 04:25:30,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:25:30" (1/1) ... [2021-11-03 04:25:30,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:25:31,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:31,535 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_9058e6e4-e433-4096-9553-2fe323d944ef/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2021-11-03 04:25:31,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:31,587 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:25:31,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:25:31,748 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_9058e6e4-e433-4096-9553-2fe323d944ef/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2021-11-03 04:25:31,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:31,769 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:25:31,839 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_9058e6e4-e433-4096-9553-2fe323d944ef/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2021-11-03 04:25:31,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:25:31,921 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:25:31,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31 WrapperNode [2021-11-03 04:25:31,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:25:31,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:31,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:25:31,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:25:31,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:31,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:32,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:25:32,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:25:32,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:25:32,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:25:32,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:32,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:32,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:32,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:32,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:33,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:33,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:33,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:25:33,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:25:33,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:25:33,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:25:33,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (1/1) ... [2021-11-03 04:25:33,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:25:33,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:25:33,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:25:33,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:25:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:25:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:25:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:25:33,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:25:51,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:25:51,861 INFO L299 CfgBuilder]: Removed 1891 assume(true) statements. [2021-11-03 04:25:51,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:51 BoogieIcfgContainer [2021-11-03 04:25:51,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:25:51,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:25:51,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:25:51,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:25:51,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:25:30" (1/3) ... [2021-11-03 04:25:51,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7474fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:51, skipping insertion in model container [2021-11-03 04:25:51,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:25:31" (2/3) ... [2021-11-03 04:25:51,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7474fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:25:51, skipping insertion in model container [2021-11-03 04:25:51,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:25:51" (3/3) ... [2021-11-03 04:25:51,879 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2021-11-03 04:25:51,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:25:51,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:25:51,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:25:51,979 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 04:25:51,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:25:52,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 9051 states, 9040 states have (on average 1.897566371681416) internal successors, (17154), 9050 states have internal predecessors, (17154), 0 states have call successors, (0), 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 04:25:52,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:25:52,158 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:52,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:52,167 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:25:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash -185442834, now seen corresponding path program 1 times [2021-11-03 04:25:52,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:52,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59944370] [2021-11-03 04:25:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:52,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:52,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:52,194 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:52,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:25:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:52,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:25:52,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:25:52,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:53,016 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 04:25:53,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:53,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59944370] [2021-11-03 04:25:53,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59944370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:53,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:53,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:25:53,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853166561] [2021-11-03 04:25:53,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:25:53,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:25:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:25:53,064 INFO L87 Difference]: Start difference. First operand has 9051 states, 9040 states have (on average 1.897566371681416) internal successors, (17154), 9050 states have internal predecessors, (17154), 0 states have call successors, (0), 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 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 04:25:53,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:53,340 INFO L93 Difference]: Finished difference Result 16348 states and 30976 transitions. [2021-11-03 04:25:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:25:53,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 04:25:53,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:53,425 INFO L225 Difference]: With dead ends: 16348 [2021-11-03 04:25:53,426 INFO L226 Difference]: Without dead ends: 9047 [2021-11-03 04:25:53,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 112 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 04:25:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9047 states. [2021-11-03 04:25:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9047 to 9047. [2021-11-03 04:25:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9047 states, 9037 states have (on average 1.8828150935044816) internal successors, (17015), 9046 states have internal predecessors, (17015), 0 states have call successors, (0), 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 04:25:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9047 states to 9047 states and 17015 transitions. [2021-11-03 04:25:53,972 INFO L78 Accepts]: Start accepts. Automaton has 9047 states and 17015 transitions. Word has length 57 [2021-11-03 04:25:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:53,974 INFO L470 AbstractCegarLoop]: Abstraction has 9047 states and 17015 transitions. [2021-11-03 04:25:53,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 04:25:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 9047 states and 17015 transitions. [2021-11-03 04:25:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:25:53,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:53,984 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:54,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:54,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:54,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:25:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -704329424, now seen corresponding path program 1 times [2021-11-03 04:25:54,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:54,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742168060] [2021-11-03 04:25:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:54,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:54,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:54,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:54,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:25:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:54,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:25:54,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:54,822 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 04:25:54,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:54,989 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 04:25:54,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:54,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742168060] [2021-11-03 04:25:54,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742168060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:54,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:54,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:25:54,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673714745] [2021-11-03 04:25:54,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:25:54,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:54,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:25:54,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:25:54,996 INFO L87 Difference]: Start difference. First operand 9047 states and 17015 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:56,150 INFO L93 Difference]: Finished difference Result 30692 states and 57725 transitions. [2021-11-03 04:25:56,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:25:56,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 04:25:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:56,274 INFO L225 Difference]: With dead ends: 30692 [2021-11-03 04:25:56,274 INFO L226 Difference]: Without dead ends: 21653 [2021-11-03 04:25:56,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 110 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 04:25:56,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21653 states. [2021-11-03 04:25:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21653 to 9043. [2021-11-03 04:25:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9043 states, 9033 states have (on average 1.8824310860179343) internal successors, (17004), 9042 states have internal predecessors, (17004), 0 states have call successors, (0), 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 04:25:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9043 states to 9043 states and 17004 transitions. [2021-11-03 04:25:56,880 INFO L78 Accepts]: Start accepts. Automaton has 9043 states and 17004 transitions. Word has length 57 [2021-11-03 04:25:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:56,880 INFO L470 AbstractCegarLoop]: Abstraction has 9043 states and 17004 transitions. [2021-11-03 04:25:56,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9043 states and 17004 transitions. [2021-11-03 04:25:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:25:56,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:56,893 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 04:25:56,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:57,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:57,112 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:25:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1058017694, now seen corresponding path program 1 times [2021-11-03 04:25:57,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:57,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540655131] [2021-11-03 04:25:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:57,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:57,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:57,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:57,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:25:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:57,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:25:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:57,710 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 04:25:57,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:57,862 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 04:25:57,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:57,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540655131] [2021-11-03 04:25:57,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540655131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:57,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:57,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:25:57,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471704828] [2021-11-03 04:25:57,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:25:57,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:25:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:25:57,865 INFO L87 Difference]: Start difference. First operand 9043 states and 17004 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 04:26:01,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:01,330 INFO L93 Difference]: Finished difference Result 62682 states and 117859 transitions. [2021-11-03 04:26:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:26:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 04:26:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:01,510 INFO L225 Difference]: With dead ends: 62682 [2021-11-03 04:26:01,510 INFO L226 Difference]: Without dead ends: 53658 [2021-11-03 04:26:01,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:26:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53658 states. [2021-11-03 04:26:02,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53658 to 9032. [2021-11-03 04:26:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9032 states, 9022 states have (on average 1.8802926180447794) internal successors, (16964), 9031 states have internal predecessors, (16964), 0 states have call successors, (0), 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 04:26:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9032 states to 9032 states and 16964 transitions. [2021-11-03 04:26:02,283 INFO L78 Accepts]: Start accepts. Automaton has 9032 states and 16964 transitions. Word has length 59 [2021-11-03 04:26:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:02,284 INFO L470 AbstractCegarLoop]: Abstraction has 9032 states and 16964 transitions. [2021-11-03 04:26:02,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 04:26:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9032 states and 16964 transitions. [2021-11-03 04:26:02,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 04:26:02,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:02,290 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 04:26:02,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:02,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:02,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1135228191, now seen corresponding path program 1 times [2021-11-03 04:26:02,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:02,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90261533] [2021-11-03 04:26:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:02,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:02,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:02,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:02,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:26:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:02,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:02,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:03,121 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 04:26:03,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:03,289 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 04:26:03,289 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:03,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90261533] [2021-11-03 04:26:03,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90261533] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:03,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:03,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:03,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503103573] [2021-11-03 04:26:03,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:03,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:03,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:03,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:03,292 INFO L87 Difference]: Start difference. First operand 9032 states and 16964 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:04,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:04,225 INFO L93 Difference]: Finished difference Result 30556 states and 57418 transitions. [2021-11-03 04:26:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:26:04,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 04:26:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:04,277 INFO L225 Difference]: With dead ends: 30556 [2021-11-03 04:26:04,278 INFO L226 Difference]: Without dead ends: 21539 [2021-11-03 04:26:04,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 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 04:26:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21539 states. [2021-11-03 04:26:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21539 to 9028. [2021-11-03 04:26:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9028 states, 9018 states have (on average 1.8794632956309603) internal successors, (16949), 9027 states have internal predecessors, (16949), 0 states have call successors, (0), 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 04:26:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9028 states to 9028 states and 16949 transitions. [2021-11-03 04:26:04,882 INFO L78 Accepts]: Start accepts. Automaton has 9028 states and 16949 transitions. Word has length 64 [2021-11-03 04:26:04,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:04,883 INFO L470 AbstractCegarLoop]: Abstraction has 9028 states and 16949 transitions. [2021-11-03 04:26:04,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:04,883 INFO L276 IsEmpty]: Start isEmpty. Operand 9028 states and 16949 transitions. [2021-11-03 04:26:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:26:04,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:04,889 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 04:26:04,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:05,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:05,103 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1751956663, now seen corresponding path program 1 times [2021-11-03 04:26:05,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:05,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393016033] [2021-11-03 04:26:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:05,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:05,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:05,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:05,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:26:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:05,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:26:05,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:05,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:05,944 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 04:26:05,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:05,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393016033] [2021-11-03 04:26:05,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393016033] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:05,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:05,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:26:05,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321813872] [2021-11-03 04:26:05,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:26:05,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:26:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:26:05,947 INFO L87 Difference]: Start difference. First operand 9028 states and 16949 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:10,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:10,896 INFO L93 Difference]: Finished difference Result 98426 states and 185008 transitions. [2021-11-03 04:26:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-03 04:26:10,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 04:26:10,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:11,269 INFO L225 Difference]: With dead ends: 98426 [2021-11-03 04:26:11,269 INFO L226 Difference]: Without dead ends: 89418 [2021-11-03 04:26:11,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-03 04:26:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89418 states. [2021-11-03 04:26:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89418 to 9041. [2021-11-03 04:26:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9041 states, 9031 states have (on average 1.8776436717971432) internal successors, (16957), 9040 states have internal predecessors, (16957), 0 states have call successors, (0), 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 04:26:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9041 states to 9041 states and 16957 transitions. [2021-11-03 04:26:12,019 INFO L78 Accepts]: Start accepts. Automaton has 9041 states and 16957 transitions. Word has length 66 [2021-11-03 04:26:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:12,019 INFO L470 AbstractCegarLoop]: Abstraction has 9041 states and 16957 transitions. [2021-11-03 04:26:12,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 9041 states and 16957 transitions. [2021-11-03 04:26:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:26:12,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:12,024 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:12,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:12,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:12,227 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1081944112, now seen corresponding path program 1 times [2021-11-03 04:26:12,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:12,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888682757] [2021-11-03 04:26:12,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:12,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:12,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:12,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:12,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:26:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:12,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:26:12,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:12,932 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 04:26:12,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:13,098 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 04:26:13,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:13,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888682757] [2021-11-03 04:26:13,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888682757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:13,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:13,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:26:13,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137584085] [2021-11-03 04:26:13,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:26:13,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:26:13,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:26:13,102 INFO L87 Difference]: Start difference. First operand 9041 states and 16957 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:15,524 INFO L93 Difference]: Finished difference Result 62668 states and 117739 transitions. [2021-11-03 04:26:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:26:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-03 04:26:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:15,611 INFO L225 Difference]: With dead ends: 62668 [2021-11-03 04:26:15,611 INFO L226 Difference]: Without dead ends: 53679 [2021-11-03 04:26:15,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:26:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53679 states. [2021-11-03 04:26:16,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53679 to 9053. [2021-11-03 04:26:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9053 states, 9043 states have (on average 1.8764790445648567) internal successors, (16969), 9052 states have internal predecessors, (16969), 0 states have call successors, (0), 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 04:26:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9053 states to 9053 states and 16969 transitions. [2021-11-03 04:26:16,410 INFO L78 Accepts]: Start accepts. Automaton has 9053 states and 16969 transitions. Word has length 70 [2021-11-03 04:26:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:16,411 INFO L470 AbstractCegarLoop]: Abstraction has 9053 states and 16969 transitions. [2021-11-03 04:26:16,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9053 states and 16969 transitions. [2021-11-03 04:26:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:26:16,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:16,416 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:16,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:16,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:16,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1323750453, now seen corresponding path program 1 times [2021-11-03 04:26:16,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:16,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629249835] [2021-11-03 04:26:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:16,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:16,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:16,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:16,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:26:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:17,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:17,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:17,223 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 04:26:17,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:17,357 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 04:26:17,358 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:17,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629249835] [2021-11-03 04:26:17,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629249835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:17,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:17,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:26:17,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107090599] [2021-11-03 04:26:17,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:26:17,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:17,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:26:17,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:26:17,360 INFO L87 Difference]: Start difference. First operand 9053 states and 16969 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:17,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:17,700 INFO L93 Difference]: Finished difference Result 21630 states and 40594 transitions. [2021-11-03 04:26:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:26:17,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-03 04:26:17,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:17,719 INFO L225 Difference]: With dead ends: 21630 [2021-11-03 04:26:17,719 INFO L226 Difference]: Without dead ends: 12605 [2021-11-03 04:26:17,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 04:26:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2021-11-03 04:26:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 9005. [2021-11-03 04:26:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9005 states, 8995 states have (on average 1.877709838799333) internal successors, (16890), 9004 states have internal predecessors, (16890), 0 states have call successors, (0), 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 04:26:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9005 states to 9005 states and 16890 transitions. [2021-11-03 04:26:18,282 INFO L78 Accepts]: Start accepts. Automaton has 9005 states and 16890 transitions. Word has length 70 [2021-11-03 04:26:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:18,285 INFO L470 AbstractCegarLoop]: Abstraction has 9005 states and 16890 transitions. [2021-11-03 04:26:18,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9005 states and 16890 transitions. [2021-11-03 04:26:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:26:18,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:18,292 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:18,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:18,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:18,507 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:18,508 INFO L85 PathProgramCache]: Analyzing trace with hash 449950784, now seen corresponding path program 1 times [2021-11-03 04:26:18,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:18,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477369913] [2021-11-03 04:26:18,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:18,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:18,510 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:18,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:26:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:18,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:18,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:19,171 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 04:26:19,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:19,346 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 04:26:19,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:19,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477369913] [2021-11-03 04:26:19,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477369913] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:19,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:19,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:19,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769793564] [2021-11-03 04:26:19,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:19,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:19,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:19,349 INFO L87 Difference]: Start difference. First operand 9005 states and 16890 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 04:26:19,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:19,815 INFO L93 Difference]: Finished difference Result 21577 states and 40500 transitions. [2021-11-03 04:26:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:26:19,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:26:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:19,829 INFO L225 Difference]: With dead ends: 21577 [2021-11-03 04:26:19,830 INFO L226 Difference]: Without dead ends: 12603 [2021-11-03 04:26:19,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 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 04:26:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12603 states. [2021-11-03 04:26:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12603 to 9002. [2021-11-03 04:26:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9002 states, 8992 states have (on average 1.8768905693950177) internal successors, (16877), 9001 states have internal predecessors, (16877), 0 states have call successors, (0), 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 04:26:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 16877 transitions. [2021-11-03 04:26:20,260 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 16877 transitions. Word has length 71 [2021-11-03 04:26:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:20,260 INFO L470 AbstractCegarLoop]: Abstraction has 9002 states and 16877 transitions. [2021-11-03 04:26:20,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 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 04:26:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 16877 transitions. [2021-11-03 04:26:20,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 04:26:20,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:20,264 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:20,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:20,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:20,481 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:20,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:20,482 INFO L85 PathProgramCache]: Analyzing trace with hash 34746602, now seen corresponding path program 1 times [2021-11-03 04:26:20,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:20,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646435995] [2021-11-03 04:26:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:20,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:20,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:20,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:20,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:26:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:21,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:26:21,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:21,222 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 04:26:21,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:21,414 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 04:26:21,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:21,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646435995] [2021-11-03 04:26:21,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646435995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:21,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:21,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:26:21,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773840815] [2021-11-03 04:26:21,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:26:21,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:26:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:26:21,416 INFO L87 Difference]: Start difference. First operand 9002 states and 16877 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:23,448 INFO L93 Difference]: Finished difference Result 50315 states and 94475 transitions. [2021-11-03 04:26:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:26:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-03 04:26:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:23,498 INFO L225 Difference]: With dead ends: 50315 [2021-11-03 04:26:23,499 INFO L226 Difference]: Without dead ends: 41348 [2021-11-03 04:26:23,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-03 04:26:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41348 states. [2021-11-03 04:26:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41348 to 9007. [2021-11-03 04:26:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9007 states, 8997 states have (on average 1.8759586528842949) internal successors, (16878), 9006 states have internal predecessors, (16878), 0 states have call successors, (0), 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 04:26:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9007 states to 9007 states and 16878 transitions. [2021-11-03 04:26:23,938 INFO L78 Accepts]: Start accepts. Automaton has 9007 states and 16878 transitions. Word has length 72 [2021-11-03 04:26:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:23,938 INFO L470 AbstractCegarLoop]: Abstraction has 9007 states and 16878 transitions. [2021-11-03 04:26:23,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:23,939 INFO L276 IsEmpty]: Start isEmpty. Operand 9007 states and 16878 transitions. [2021-11-03 04:26:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:26:23,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:23,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:23,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:24,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:24,157 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:24,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1329810693, now seen corresponding path program 1 times [2021-11-03 04:26:24,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:24,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151442890] [2021-11-03 04:26:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:24,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:24,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:24,164 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:24,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:26:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:26:24,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:25,273 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 04:26:25,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:26,468 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 04:26:26,468 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:26,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151442890] [2021-11-03 04:26:26,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151442890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:26,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:26,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:26:26,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407464929] [2021-11-03 04:26:26,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:26:26,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:26,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:26:26,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:26:26,470 INFO L87 Difference]: Start difference. First operand 9007 states and 16878 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 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 04:26:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:31,640 INFO L93 Difference]: Finished difference Result 33163 states and 62230 transitions. [2021-11-03 04:26:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:26:31,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:26:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:31,668 INFO L225 Difference]: With dead ends: 33163 [2021-11-03 04:26:31,668 INFO L226 Difference]: Without dead ends: 24210 [2021-11-03 04:26:31,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:26:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24210 states. [2021-11-03 04:26:32,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24210 to 14606. [2021-11-03 04:26:32,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14606 states, 14596 states have (on average 1.8732529460126062) internal successors, (27342), 14605 states have internal predecessors, (27342), 0 states have call successors, (0), 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 04:26:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14606 states to 14606 states and 27342 transitions. [2021-11-03 04:26:32,593 INFO L78 Accepts]: Start accepts. Automaton has 14606 states and 27342 transitions. Word has length 73 [2021-11-03 04:26:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:32,593 INFO L470 AbstractCegarLoop]: Abstraction has 14606 states and 27342 transitions. [2021-11-03 04:26:32,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 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 04:26:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 14606 states and 27342 transitions. [2021-11-03 04:26:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 04:26:32,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:32,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:32,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:32,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:32,800 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1763905689, now seen corresponding path program 1 times [2021-11-03 04:26:32,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:32,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917690916] [2021-11-03 04:26:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:32,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:32,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:32,806 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:32,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:26:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:33,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:26:33,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:33,678 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 04:26:33,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:33,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:33,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917690916] [2021-11-03 04:26:33,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917690916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:33,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:33,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:26:33,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88188069] [2021-11-03 04:26:33,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:33,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:33,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:33,854 INFO L87 Difference]: Start difference. First operand 14606 states and 27342 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:45,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:45,634 INFO L93 Difference]: Finished difference Result 84916 states and 158086 transitions. [2021-11-03 04:26:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:26:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-03 04:26:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:45,723 INFO L225 Difference]: With dead ends: 84916 [2021-11-03 04:26:45,723 INFO L226 Difference]: Without dead ends: 70363 [2021-11-03 04:26:45,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 143 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 04:26:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70363 states. [2021-11-03 04:26:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70363 to 20782. [2021-11-03 04:26:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20782 states, 20772 states have (on average 1.8736761024456) internal successors, (38920), 20781 states have internal predecessors, (38920), 0 states have call successors, (0), 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 04:26:47,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20782 states to 20782 states and 38920 transitions. [2021-11-03 04:26:47,135 INFO L78 Accepts]: Start accepts. Automaton has 20782 states and 38920 transitions. Word has length 74 [2021-11-03 04:26:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:47,136 INFO L470 AbstractCegarLoop]: Abstraction has 20782 states and 38920 transitions. [2021-11-03 04:26:47,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 20782 states and 38920 transitions. [2021-11-03 04:26:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:26:47,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:47,138 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:47,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:26:47,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:47,340 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash 379802179, now seen corresponding path program 1 times [2021-11-03 04:26:47,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:47,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319096671] [2021-11-03 04:26:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:47,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:47,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:47,352 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:47,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:26:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:48,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:26:48,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:26:48,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:48,388 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 04:26:48,388 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:48,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319096671] [2021-11-03 04:26:48,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319096671] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:48,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:48,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:26:48,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315176587] [2021-11-03 04:26:48,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:26:48,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:26:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:26:48,390 INFO L87 Difference]: Start difference. First operand 20782 states and 38920 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 04:27:03,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:03,725 INFO L93 Difference]: Finished difference Result 74882 states and 139975 transitions. [2021-11-03 04:27:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:27:03,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 04:27:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:03,797 INFO L225 Difference]: With dead ends: 74882 [2021-11-03 04:27:03,797 INFO L226 Difference]: Without dead ends: 55795 [2021-11-03 04:27:03,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:27:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55795 states. [2021-11-03 04:27:05,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55795 to 35833. [2021-11-03 04:27:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35833 states, 35823 states have (on average 1.8658962119308824) internal successors, (66842), 35832 states have internal predecessors, (66842), 0 states have call successors, (0), 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 04:27:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35833 states to 35833 states and 66842 transitions. [2021-11-03 04:27:05,801 INFO L78 Accepts]: Start accepts. Automaton has 35833 states and 66842 transitions. Word has length 75 [2021-11-03 04:27:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:05,801 INFO L470 AbstractCegarLoop]: Abstraction has 35833 states and 66842 transitions. [2021-11-03 04:27:05,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 04:27:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 35833 states and 66842 transitions. [2021-11-03 04:27:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 04:27:05,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:05,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:05,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-03 04:27:06,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:06,007 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:27:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash -826611792, now seen corresponding path program 1 times [2021-11-03 04:27:06,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:06,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477248172] [2021-11-03 04:27:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:06,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:06,015 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:06,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:27:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:06,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:27:06,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:06,857 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 04:27:06,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:07,047 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 04:27:07,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:07,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477248172] [2021-11-03 04:27:07,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477248172] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:07,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:07,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:27:07,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186622534] [2021-11-03 04:27:07,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:27:07,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:27:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:27:07,052 INFO L87 Difference]: Start difference. First operand 35833 states and 66842 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:17,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:27:17,297 INFO L93 Difference]: Finished difference Result 99749 states and 185186 transitions. [2021-11-03 04:27:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:27:17,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-03 04:27:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:27:17,384 INFO L225 Difference]: With dead ends: 99749 [2021-11-03 04:27:17,384 INFO L226 Difference]: Without dead ends: 65962 [2021-11-03 04:27:17,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:27:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65962 states. [2021-11-03 04:27:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65962 to 45323. [2021-11-03 04:27:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45323 states, 45313 states have (on average 1.839074879173747) internal successors, (83334), 45322 states have internal predecessors, (83334), 0 states have call successors, (0), 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 04:27:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45323 states to 45323 states and 83334 transitions. [2021-11-03 04:27:20,031 INFO L78 Accepts]: Start accepts. Automaton has 45323 states and 83334 transitions. Word has length 76 [2021-11-03 04:27:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:20,031 INFO L470 AbstractCegarLoop]: Abstraction has 45323 states and 83334 transitions. [2021-11-03 04:27:20,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:27:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 45323 states and 83334 transitions. [2021-11-03 04:27:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:27:20,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:20,034 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:20,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:20,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:20,239 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:27:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash 677162203, now seen corresponding path program 1 times [2021-11-03 04:27:20,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:20,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121909563] [2021-11-03 04:27:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:20,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:20,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:20,252 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:20,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9058e6e4-e433-4096-9553-2fe323d944ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:27:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:20,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:27:20,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:21,139 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 04:27:21,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:21,313 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 04:27:21,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:21,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121909563] [2021-11-03 04:27:21,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121909563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:21,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:21,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:27:21,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944893571] [2021-11-03 04:27:21,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:27:21,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:21,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:27:21,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:27:21,316 INFO L87 Difference]: Start difference. First operand 45323 states and 83334 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)