./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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 bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:32:54,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:32:54,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:32:54,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:32:54,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:32:54,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:32:54,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:32:54,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:32:54,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:32:54,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:32:54,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:32:54,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:32:54,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:32:54,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:32:54,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:32:54,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:32:54,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:32:54,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:32:54,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:32:54,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:32:54,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:32:54,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:32:54,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:32:54,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:32:54,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:32:54,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:32:54,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:32:54,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:32:54,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:32:54,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:32:54,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:32:54,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:32:54,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:32:54,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:32:54,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:32:54,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:32:54,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:32:54,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:32:54,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:32:54,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:32:54,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:32:54,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:32:54,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:32:54,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:32:54,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:32:54,392 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:32:54,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:32:54,393 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:32:54,393 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:32:54,394 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:32:54,394 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:32:54,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:32:54,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:32:54,395 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:32:54,395 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:32:54,395 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:32:54,396 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:32:54,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:32:54,397 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:32:54,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:32:54,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:32:54,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:32:54,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:32:54,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:32:54,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:32:54,401 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:32:54,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:32:54,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:32:54,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:32:54,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:32:54,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:32:54,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:32:54,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:32:54,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:32:54,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:32:54,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:32:54,406 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:32:54,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:32:54,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:32:54,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:32:54,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:32:54,408 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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 [2021-11-03 04:32:54,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:32:54,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:32:54,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:32:54,826 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:32:54,826 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:32:54,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2021-11-03 04:32:54,896 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/dd2959ccb/047476a0a59c4761aef333ecb6fd3cca/FLAG67a927ef1 [2021-11-03 04:32:55,541 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:32:55,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2021-11-03 04:32:55,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/dd2959ccb/047476a0a59c4761aef333ecb6fd3cca/FLAG67a927ef1 [2021-11-03 04:32:55,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/dd2959ccb/047476a0a59c4761aef333ecb6fd3cca [2021-11-03 04:32:55,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:32:55,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:32:55,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:32:55,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:32:55,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:32:55,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:32:55" (1/1) ... [2021-11-03 04:32:55,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff18aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:32:55, skipping insertion in model container [2021-11-03 04:32:55,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:32:55" (1/1) ... [2021-11-03 04:32:55,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:32:55,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:32:56,160 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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2021-11-03 04:32:56,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:32:56,473 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 04:32:56,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c5ecaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:32:56, skipping insertion in model container [2021-11-03 04:32:56,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:32:56,474 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:32:56,477 INFO L168 Benchmark]: Toolchain (without parser) took 706.27 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.5 MB in the beginning and 60.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:32:56,478 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 59.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:32:56,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.40 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.4 MB in the beginning and 60.9 MB in the end (delta: -14.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:32:56,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 59.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 703.40 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 46.4 MB in the beginning and 60.9 MB in the end (delta: -14.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 77]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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 bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:32:59,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:32:59,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:32:59,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:32:59,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:32:59,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:32:59,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:32:59,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:32:59,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:32:59,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:32:59,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:32:59,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:32:59,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:32:59,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:32:59,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:32:59,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:32:59,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:32:59,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:32:59,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:32:59,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:32:59,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:32:59,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:32:59,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:32:59,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:32:59,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:32:59,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:32:59,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:32:59,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:32:59,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:32:59,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:32:59,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:32:59,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:32:59,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:32:59,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:32:59,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:32:59,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:32:59,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:32:59,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:32:59,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:32:59,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:32:59,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:32:59,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:32:59,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:32:59,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:32:59,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:32:59,368 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:32:59,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:32:59,368 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:32:59,368 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:32:59,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:32:59,369 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:32:59,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:32:59,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:32:59,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:32:59,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:32:59,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:32:59,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:32:59,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:32:59,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:32:59,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:32:59,374 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:32:59,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:32:59,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:32:59,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:32:59,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:32:59,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:32:59,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:32:59,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:32:59,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:32:59,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:32:59,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:32:59,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:32:59,377 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:32:59,377 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:32:59,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:32:59,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:32:59,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:32:59,379 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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcf02459061acfdf5a11fb9ee5e832193100590b0367d937f266d29520f326a3 [2021-11-03 04:32:59,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:32:59,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:32:59,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:32:59,918 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:32:59,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:32:59,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2021-11-03 04:33:00,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/7f7088689/ee74043a2bfe4a1d91cdf2d935cdcfc9/FLAG06061ea29 [2021-11-03 04:33:00,931 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:33:00,934 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c [2021-11-03 04:33:00,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/7f7088689/ee74043a2bfe4a1d91cdf2d935cdcfc9/FLAG06061ea29 [2021-11-03 04:33:01,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/data/7f7088689/ee74043a2bfe4a1d91cdf2d935cdcfc9 [2021-11-03 04:33:01,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:33:01,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:33:01,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:33:01,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:33:01,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:33:01,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:33:01" (1/1) ... [2021-11-03 04:33:01,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2045bbb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:01, skipping insertion in model container [2021-11-03 04:33:01,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:33:01" (1/1) ... [2021-11-03 04:33:01,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:33:01,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:33:01,573 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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2021-11-03 04:33:01,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:33:01,934 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:33:01,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:33:02,017 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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2021-11-03 04:33:02,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:33:02,140 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:33:02,204 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_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/sv-benchmarks/c/product-lines/elevator_spec1_product24.cil.c[11232,11245] [2021-11-03 04:33:02,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:33:02,364 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:33:02,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02 WrapperNode [2021-11-03 04:33:02,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:33:02,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:33:02,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:33:02,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:33:02,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:02,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:33:03,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:33:03,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:33:03,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:33:03,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:33:03,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:33:03,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:33:03,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:33:03,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (1/1) ... [2021-11-03 04:33:03,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:33:03,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:33:03,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:33:03,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:33:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:33:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:33:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:33:04,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:33:23,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:33:23,663 INFO L299 CfgBuilder]: Removed 1577 assume(true) statements. [2021-11-03 04:33:23,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:23 BoogieIcfgContainer [2021-11-03 04:33:23,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:33:23,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:33:23,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:33:23,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:33:23,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:33:01" (1/3) ... [2021-11-03 04:33:23,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e99c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:33:23, skipping insertion in model container [2021-11-03 04:33:23,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:33:02" (2/3) ... [2021-11-03 04:33:23,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e99c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:33:23, skipping insertion in model container [2021-11-03 04:33:23,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:33:23" (3/3) ... [2021-11-03 04:33:23,681 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c [2021-11-03 04:33:23,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:33:23,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:33:23,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:33:23,773 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 04:33:23,773 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:33:23,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 6911 states, 6905 states have (on average 1.8896451846488052) internal successors, (13048), 6910 states have internal predecessors, (13048), 0 states have call successors, (0), 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 04:33:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-03 04:33:23,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:23,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:23,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1969331306, now seen corresponding path program 1 times [2021-11-03 04:33:23,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:23,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070952961] [2021-11-03 04:33:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:23,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:23,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:23,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:23,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:33:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:24,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:33:24,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:24,552 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 04:33:24,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:24,638 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 04:33:24,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:24,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070952961] [2021-11-03 04:33:24,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070952961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:24,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:24,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:33:24,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521373245] [2021-11-03 04:33:24,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:33:24,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:24,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:33:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:33:24,700 INFO L87 Difference]: Start difference. First operand has 6911 states, 6905 states have (on average 1.8896451846488052) internal successors, (13048), 6910 states have internal predecessors, (13048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:24,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:24,945 INFO L93 Difference]: Finished difference Result 6930 states and 13071 transitions. [2021-11-03 04:33:24,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:33:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-03 04:33:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:25,044 INFO L225 Difference]: With dead ends: 6930 [2021-11-03 04:33:25,044 INFO L226 Difference]: Without dead ends: 6907 [2021-11-03 04:33:25,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:33:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6907 states. [2021-11-03 04:33:25,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6907 to 6907. [2021-11-03 04:33:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 6902 states have (on average 1.8887279049550856) internal successors, (13036), 6906 states have internal predecessors, (13036), 0 states have call successors, (0), 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 04:33:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 13036 transitions. [2021-11-03 04:33:25,465 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 13036 transitions. Word has length 36 [2021-11-03 04:33:25,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:25,467 INFO L470 AbstractCegarLoop]: Abstraction has 6907 states and 13036 transitions. [2021-11-03 04:33:25,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 13036 transitions. [2021-11-03 04:33:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:33:25,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:25,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:25,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:25,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:25,698 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:25,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash 14762286, now seen corresponding path program 1 times [2021-11-03 04:33:25,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:25,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760086761] [2021-11-03 04:33:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:25,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:25,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:25,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:33:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:26,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:33:26,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:26,442 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 04:33:26,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:26,581 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 04:33:26,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:26,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760086761] [2021-11-03 04:33:26,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760086761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:26,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:26,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:33:26,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035031523] [2021-11-03 04:33:26,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:26,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:26,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:26,591 INFO L87 Difference]: Start difference. First operand 6907 states and 13036 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:27,443 INFO L93 Difference]: Finished difference Result 20641 states and 38965 transitions. [2021-11-03 04:33:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:27,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-03 04:33:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:27,566 INFO L225 Difference]: With dead ends: 20641 [2021-11-03 04:33:27,566 INFO L226 Difference]: Without dead ends: 13747 [2021-11-03 04:33:27,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:27,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13747 states. [2021-11-03 04:33:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13747 to 6907. [2021-11-03 04:33:28,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 6902 states have (on average 1.887713706172124) internal successors, (13029), 6906 states have internal predecessors, (13029), 0 states have call successors, (0), 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 04:33:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 13029 transitions. [2021-11-03 04:33:28,208 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 13029 transitions. Word has length 38 [2021-11-03 04:33:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:28,209 INFO L470 AbstractCegarLoop]: Abstraction has 6907 states and 13029 transitions. [2021-11-03 04:33:28,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 13029 transitions. [2021-11-03 04:33:28,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:33:28,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:28,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:28,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-03 04:33:28,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:28,427 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash 93579505, now seen corresponding path program 1 times [2021-11-03 04:33:28,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:28,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453510211] [2021-11-03 04:33:28,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:28,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:28,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:28,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:28,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:33:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:28,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:33:28,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:28,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:33:29,124 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:29,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453510211] [2021-11-03 04:33:29,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453510211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:29,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:29,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:33:29,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297196903] [2021-11-03 04:33:29,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:33:29,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:33:29,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:33:29,127 INFO L87 Difference]: Start difference. First operand 6907 states and 13029 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:32,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:32,342 INFO L93 Difference]: Finished difference Result 47824 states and 90255 transitions. [2021-11-03 04:33:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:33:32,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-03 04:33:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:32,524 INFO L225 Difference]: With dead ends: 47824 [2021-11-03 04:33:32,524 INFO L226 Difference]: Without dead ends: 40939 [2021-11-03 04:33:32,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:33:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40939 states. [2021-11-03 04:33:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40939 to 6885. [2021-11-03 04:33:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6885 states, 6880 states have (on average 1.8863372093023256) internal successors, (12978), 6884 states have internal predecessors, (12978), 0 states have call successors, (0), 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 04:33:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 12978 transitions. [2021-11-03 04:33:33,571 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 12978 transitions. Word has length 44 [2021-11-03 04:33:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:33,572 INFO L470 AbstractCegarLoop]: Abstraction has 6885 states and 12978 transitions. [2021-11-03 04:33:33,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 12978 transitions. [2021-11-03 04:33:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:33:33,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:33,578 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:33,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:33,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:33,797 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:33,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:33,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1637914544, now seen corresponding path program 1 times [2021-11-03 04:33:33,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:33,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741843062] [2021-11-03 04:33:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:33,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:33,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:33,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:33,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:33:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:34,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:33:34,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:34,349 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 04:33:34,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:34,490 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 04:33:34,491 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:34,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741843062] [2021-11-03 04:33:34,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741843062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:34,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:34,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:33:34,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161774874] [2021-11-03 04:33:34,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:34,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:34,493 INFO L87 Difference]: Start difference. First operand 6885 states and 12978 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:35,515 INFO L93 Difference]: Finished difference Result 20552 states and 38769 transitions. [2021-11-03 04:33:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:35,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-11-03 04:33:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:35,557 INFO L225 Difference]: With dead ends: 20552 [2021-11-03 04:33:35,558 INFO L226 Difference]: Without dead ends: 13689 [2021-11-03 04:33:35,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13689 states. [2021-11-03 04:33:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13689 to 6885. [2021-11-03 04:33:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6885 states, 6880 states have (on average 1.8847383720930233) internal successors, (12967), 6884 states have internal predecessors, (12967), 0 states have call successors, (0), 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 04:33:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6885 states to 6885 states and 12967 transitions. [2021-11-03 04:33:36,119 INFO L78 Accepts]: Start accepts. Automaton has 6885 states and 12967 transitions. Word has length 46 [2021-11-03 04:33:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:36,119 INFO L470 AbstractCegarLoop]: Abstraction has 6885 states and 12967 transitions. [2021-11-03 04:33:36,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states and 12967 transitions. [2021-11-03 04:33:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:33:36,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:36,121 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:36,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:36,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:36,334 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash -415086917, now seen corresponding path program 1 times [2021-11-03 04:33:36,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:36,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669250135] [2021-11-03 04:33:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:36,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:36,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:36,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:36,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:33:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:36,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:33:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:37,052 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 04:33:37,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:37,256 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 04:33:37,256 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:37,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669250135] [2021-11-03 04:33:37,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669250135] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:37,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:37,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:33:37,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734685978] [2021-11-03 04:33:37,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:33:37,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:37,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:33:37,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:33:37,259 INFO L87 Difference]: Start difference. First operand 6885 states and 12967 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:43,513 INFO L93 Difference]: Finished difference Result 74979 states and 141471 transitions. [2021-11-03 04:33:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:33:43,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-03 04:33:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:43,788 INFO L225 Difference]: With dead ends: 74979 [2021-11-03 04:33:43,789 INFO L226 Difference]: Without dead ends: 68119 [2021-11-03 04:33:43,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:33:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68119 states. [2021-11-03 04:33:44,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68119 to 6887. [2021-11-03 04:33:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 6882 states have (on average 1.8837547224643998) internal successors, (12964), 6886 states have internal predecessors, (12964), 0 states have call successors, (0), 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 04:33:45,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 12964 transitions. [2021-11-03 04:33:45,023 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 12964 transitions. Word has length 52 [2021-11-03 04:33:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:45,024 INFO L470 AbstractCegarLoop]: Abstraction has 6887 states and 12964 transitions. [2021-11-03 04:33:45,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 12964 transitions. [2021-11-03 04:33:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-03 04:33:45,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:45,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:45,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:45,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:45,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:45,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:45,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2081139976, now seen corresponding path program 1 times [2021-11-03 04:33:45,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:45,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126107487] [2021-11-03 04:33:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:45,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:45,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:45,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:45,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:33:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:45,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:33:45,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:46,179 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 04:33:46,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:46,392 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 04:33:46,392 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:46,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126107487] [2021-11-03 04:33:46,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126107487] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:46,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:46,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:33:46,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674440253] [2021-11-03 04:33:46,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:33:46,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:33:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:33:46,395 INFO L87 Difference]: Start difference. First operand 6887 states and 12964 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:51,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:51,167 INFO L93 Difference]: Finished difference Result 74947 states and 141392 transitions. [2021-11-03 04:33:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:33:51,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-03 04:33:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:51,420 INFO L225 Difference]: With dead ends: 74947 [2021-11-03 04:33:51,420 INFO L226 Difference]: Without dead ends: 68087 [2021-11-03 04:33:51,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:33:51,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68087 states. [2021-11-03 04:33:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68087 to 6891. [2021-11-03 04:33:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6891 states, 6886 states have (on average 1.8830961370897472) internal successors, (12967), 6890 states have internal predecessors, (12967), 0 states have call successors, (0), 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 04:33:52,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6891 states to 6891 states and 12967 transitions. [2021-11-03 04:33:52,403 INFO L78 Accepts]: Start accepts. Automaton has 6891 states and 12967 transitions. Word has length 54 [2021-11-03 04:33:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:52,404 INFO L470 AbstractCegarLoop]: Abstraction has 6891 states and 12967 transitions. [2021-11-03 04:33:52,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 6891 states and 12967 transitions. [2021-11-03 04:33:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:33:52,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:52,406 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:52,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:33:52,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:52,621 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:52,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1039252933, now seen corresponding path program 1 times [2021-11-03 04:33:52,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:52,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387672141] [2021-11-03 04:33:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:52,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:52,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:52,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:52,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:33:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:53,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:33:53,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:53,331 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 04:33:53,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:53,488 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 04:33:53,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:53,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387672141] [2021-11-03 04:33:53,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387672141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:53,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:53,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:33:53,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613695557] [2021-11-03 04:33:53,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:53,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:53,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:53,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:53,491 INFO L87 Difference]: Start difference. First operand 6891 states and 12967 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 04:33:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:53,862 INFO L93 Difference]: Finished difference Result 13730 states and 25865 transitions. [2021-11-03 04:33:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:53,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 04:33:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:53,882 INFO L225 Difference]: With dead ends: 13730 [2021-11-03 04:33:53,882 INFO L226 Difference]: Without dead ends: 6870 [2021-11-03 04:33:53,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:53,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2021-11-03 04:33:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 6870. [2021-11-03 04:33:54,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 6865 states have (on average 1.883321194464676) internal successors, (12929), 6869 states have internal predecessors, (12929), 0 states have call successors, (0), 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 04:33:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 12929 transitions. [2021-11-03 04:33:54,661 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 12929 transitions. Word has length 56 [2021-11-03 04:33:54,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:54,664 INFO L470 AbstractCegarLoop]: Abstraction has 6870 states and 12929 transitions. [2021-11-03 04:33:54,664 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 04:33:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 12929 transitions. [2021-11-03 04:33:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:33:54,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:54,666 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 04:33:54,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:54,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:54,883 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash -296292637, now seen corresponding path program 1 times [2021-11-03 04:33:54,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:54,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437203005] [2021-11-03 04:33:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:54,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:54,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:54,887 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:54,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:33:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:55,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:33:55,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:55,553 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 04:33:55,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:55,727 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 04:33:55,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:55,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437203005] [2021-11-03 04:33:55,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437203005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:55,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:55,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:33:55,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524116629] [2021-11-03 04:33:55,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:33:55,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:55,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:33:55,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:33:55,730 INFO L87 Difference]: Start difference. First operand 6870 states and 12929 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:56,368 INFO L93 Difference]: Finished difference Result 13674 states and 25768 transitions. [2021-11-03 04:33:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:56,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 04:33:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:56,380 INFO L225 Difference]: With dead ends: 13674 [2021-11-03 04:33:56,380 INFO L226 Difference]: Without dead ends: 6845 [2021-11-03 04:33:56,392 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:33:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6845 states. [2021-11-03 04:33:57,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6845 to 6845. [2021-11-03 04:33:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6845 states, 6840 states have (on average 1.8837719298245614) internal successors, (12885), 6844 states have internal predecessors, (12885), 0 states have call successors, (0), 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 04:33:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6845 states to 6845 states and 12885 transitions. [2021-11-03 04:33:57,090 INFO L78 Accepts]: Start accepts. Automaton has 6845 states and 12885 transitions. Word has length 57 [2021-11-03 04:33:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:57,091 INFO L470 AbstractCegarLoop]: Abstraction has 6845 states and 12885 transitions. [2021-11-03 04:33:57,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6845 states and 12885 transitions. [2021-11-03 04:33:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:33:57,092 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:57,093 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:33:57,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:57,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:57,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:57,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1306553900, now seen corresponding path program 1 times [2021-11-03 04:33:57,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:57,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077436920] [2021-11-03 04:33:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:57,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:57,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:57,321 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:57,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:33:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:57,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:33:57,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:58,018 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 04:33:58,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:58,179 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 04:33:58,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:58,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077436920] [2021-11-03 04:33:58,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077436920] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:58,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:58,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:33:58,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174947698] [2021-11-03 04:33:58,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:33:58,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:33:58,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:58,182 INFO L87 Difference]: Start difference. First operand 6845 states and 12885 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:58,590 INFO L93 Difference]: Finished difference Result 13649 states and 25724 transitions. [2021-11-03 04:33:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:33:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 04:33:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:58,599 INFO L225 Difference]: With dead ends: 13649 [2021-11-03 04:33:58,599 INFO L226 Difference]: Without dead ends: 6842 [2021-11-03 04:33:58,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:33:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6842 states. [2021-11-03 04:33:58,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6842 to 6842. [2021-11-03 04:33:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6842 states, 6837 states have (on average 1.883428404270879) internal successors, (12877), 6841 states have internal predecessors, (12877), 0 states have call successors, (0), 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 04:33:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6842 states to 6842 states and 12877 transitions. [2021-11-03 04:33:58,999 INFO L78 Accepts]: Start accepts. Automaton has 6842 states and 12877 transitions. Word has length 58 [2021-11-03 04:33:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:58,999 INFO L470 AbstractCegarLoop]: Abstraction has 6842 states and 12877 transitions. [2021-11-03 04:33:59,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:33:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6842 states and 12877 transitions. [2021-11-03 04:33:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:33:59,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:59,001 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 04:33:59,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:33:59,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:59,210 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:33:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash -172510179, now seen corresponding path program 1 times [2021-11-03 04:33:59,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:59,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564466855] [2021-11-03 04:33:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:59,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:59,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:59,212 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:59,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:33:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:59,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 04:33:59,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:59,956 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 04:33:59,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:00,159 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 04:34:00,160 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:00,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564466855] [2021-11-03 04:34:00,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564466855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:00,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:00,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:34:00,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821327150] [2021-11-03 04:34:00,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:34:00,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:00,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:34:00,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:34:00,162 INFO L87 Difference]: Start difference. First operand 6842 states and 12877 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:00,852 INFO L93 Difference]: Finished difference Result 13640 states and 25706 transitions. [2021-11-03 04:34:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:34:00,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 04:34:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:00,865 INFO L225 Difference]: With dead ends: 13640 [2021-11-03 04:34:00,865 INFO L226 Difference]: Without dead ends: 6840 [2021-11-03 04:34:00,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:34:00,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2021-11-03 04:34:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 6840. [2021-11-03 04:34:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6840 states, 6835 states have (on average 1.8831016825164595) internal successors, (12871), 6839 states have internal predecessors, (12871), 0 states have call successors, (0), 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 04:34:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6840 states to 6840 states and 12871 transitions. [2021-11-03 04:34:01,379 INFO L78 Accepts]: Start accepts. Automaton has 6840 states and 12871 transitions. Word has length 59 [2021-11-03 04:34:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:01,380 INFO L470 AbstractCegarLoop]: Abstraction has 6840 states and 12871 transitions. [2021-11-03 04:34:01,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:01,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6840 states and 12871 transitions. [2021-11-03 04:34:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:34:01,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:01,382 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:01,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:01,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:01,599 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:34:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash -486906799, now seen corresponding path program 1 times [2021-11-03 04:34:01,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:01,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411798741] [2021-11-03 04:34:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:01,601 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:01,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:01,602 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:34:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:02,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:34:02,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:02,385 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 04:34:02,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:02,533 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 04:34:02,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:02,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411798741] [2021-11-03 04:34:02,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411798741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:02,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:02,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:34:02,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100667765] [2021-11-03 04:34:02,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:34:02,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:34:02,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:34:02,536 INFO L87 Difference]: Start difference. First operand 6840 states and 12871 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:03,196 INFO L93 Difference]: Finished difference Result 13633 states and 25691 transitions. [2021-11-03 04:34:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:34:03,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-03 04:34:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:03,206 INFO L225 Difference]: With dead ends: 13633 [2021-11-03 04:34:03,207 INFO L226 Difference]: Without dead ends: 6838 [2021-11-03 04:34:03,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:34:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2021-11-03 04:34:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 6838. [2021-11-03 04:34:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 6833 states have (on average 1.8827747695009514) internal successors, (12865), 6837 states have internal predecessors, (12865), 0 states have call successors, (0), 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 04:34:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 12865 transitions. [2021-11-03 04:34:03,577 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 12865 transitions. Word has length 60 [2021-11-03 04:34:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:03,577 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 12865 transitions. [2021-11-03 04:34:03,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 12865 transitions. [2021-11-03 04:34:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-03 04:34:03,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:03,578 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:03,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:03,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:03,779 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:34:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2090471378, now seen corresponding path program 1 times [2021-11-03 04:34:03,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:03,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116914254] [2021-11-03 04:34:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:03,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:03,781 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:34:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:04,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:34:04,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:04,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:04,902 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 04:34:04,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:04,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116914254] [2021-11-03 04:34:04,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116914254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:04,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:04,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:34:04,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791927037] [2021-11-03 04:34:04,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:34:04,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:34:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:04,904 INFO L87 Difference]: Start difference. First operand 6838 states and 12865 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:06,628 INFO L93 Difference]: Finished difference Result 17824 states and 33600 transitions. [2021-11-03 04:34:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:34:06,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-03 04:34:06,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:06,650 INFO L225 Difference]: With dead ends: 17824 [2021-11-03 04:34:06,651 INFO L226 Difference]: Without dead ends: 14373 [2021-11-03 04:34:06,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:34:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2021-11-03 04:34:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 8980. [2021-11-03 04:34:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8980 states, 8975 states have (on average 1.8843454038997214) internal successors, (16912), 8979 states have internal predecessors, (16912), 0 states have call successors, (0), 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 04:34:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8980 states to 8980 states and 16912 transitions. [2021-11-03 04:34:07,116 INFO L78 Accepts]: Start accepts. Automaton has 8980 states and 16912 transitions. Word has length 61 [2021-11-03 04:34:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:07,116 INFO L470 AbstractCegarLoop]: Abstraction has 8980 states and 16912 transitions. [2021-11-03 04:34:07,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:34:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 8980 states and 16912 transitions. [2021-11-03 04:34:07,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 04:34:07,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:07,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:07,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:07,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:07,327 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:34:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:07,328 INFO L85 PathProgramCache]: Analyzing trace with hash -873239124, now seen corresponding path program 1 times [2021-11-03 04:34:07,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:07,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33460409] [2021-11-03 04:34:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:07,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:07,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:07,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:34:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:07,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:34:07,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:34:08,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:08,378 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 04:34:08,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:08,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33460409] [2021-11-03 04:34:08,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33460409] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:08,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:08,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:34:08,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891454919] [2021-11-03 04:34:08,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:34:08,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:34:08,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:34:08,380 INFO L87 Difference]: Start difference. First operand 8980 states and 16912 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 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 04:34:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:34:09,362 INFO L93 Difference]: Finished difference Result 16830 states and 31502 transitions. [2021-11-03 04:34:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:34:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-03 04:34:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:34:09,374 INFO L225 Difference]: With dead ends: 16830 [2021-11-03 04:34:09,374 INFO L226 Difference]: Without dead ends: 9049 [2021-11-03 04:34:09,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:34:09,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9049 states. [2021-11-03 04:34:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9049 to 6299. [2021-11-03 04:34:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6299 states, 6294 states have (on average 1.8767079758500158) internal successors, (11812), 6298 states have internal predecessors, (11812), 0 states have call successors, (0), 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 04:34:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 11812 transitions. [2021-11-03 04:34:09,824 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 11812 transitions. Word has length 80 [2021-11-03 04:34:09,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:34:09,825 INFO L470 AbstractCegarLoop]: Abstraction has 6299 states and 11812 transitions. [2021-11-03 04:34:09,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 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 04:34:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 11812 transitions. [2021-11-03 04:34:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:34:09,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:34:09,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:34:09,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 04:34:10,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:34:10,029 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:34:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:34:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2086058312, now seen corresponding path program 1 times [2021-11-03 04:34:10,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:34:10,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662421446] [2021-11-03 04:34:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:34:10,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:34:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:34:10,033 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:34:10,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8200d6bc-a97b-4cd6-a19f-8ca0042d6056/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:34:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:34:10,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:34:10,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:34:10,846 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 04:34:10,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:34:11,126 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 04:34:11,126 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:34:11,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662421446] [2021-11-03 04:34:11,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662421446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:34:11,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:34:11,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:34:11,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048255347] [2021-11-03 04:34:11,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:34:11,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:34:11,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:34:11,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:34:11,128 INFO L87 Difference]: Start difference. First operand 6299 states and 11812 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)