./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product31.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_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/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_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/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_1fb48ce3-b93e-4282-a88c-72ac417d019a/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 a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:30,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:30,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:30,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:30,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:30,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:30,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:30,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:30,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:30,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:30,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:30,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:30,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:30,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:30,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:30,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:30,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:30,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:30,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:30,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:30,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:30,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:30,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:30,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:30,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:30,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:30,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:30,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:30,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:30,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:30,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:30,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:30,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:30,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:30,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:30,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:30,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:30,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:30,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:30,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:30,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:30,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:15:30,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:30,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:30,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:30,437 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:30,438 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:30,438 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:30,438 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:15:30,438 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:30,439 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:30,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:15:30,440 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:15:30,440 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:30,441 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:15:30,441 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:15:30,441 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:15:30,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:30,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:30,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:15:30,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:30,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:30,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:30,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:30,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:30,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:30,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:30,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:30,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:30,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:30,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:30,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:30,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:30,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:30,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:30,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:30,448 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:15:30,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:15:30,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:30,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:30,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:30,449 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_1fb48ce3-b93e-4282-a88c-72ac417d019a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb [2021-11-03 04:15:30,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:30,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:30,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:30,763 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:30,763 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:30,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-11-03 04:15:30,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/c731ab96b/e5ec389d27494860a89ef2569f196947/FLAG4cb914878 [2021-11-03 04:15:31,611 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:31,612 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-11-03 04:15:31,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/c731ab96b/e5ec389d27494860a89ef2569f196947/FLAG4cb914878 [2021-11-03 04:15:31,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/c731ab96b/e5ec389d27494860a89ef2569f196947 [2021-11-03 04:15:31,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:31,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:31,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:31,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:31,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:31,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:31" (1/1) ... [2021-11-03 04:15:31,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da79304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:31, skipping insertion in model container [2021-11-03 04:15:31,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:31" (1/1) ... [2021-11-03 04:15:31,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:31,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:32,613 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_1fb48ce3-b93e-4282-a88c-72ac417d019a/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-11-03 04:15:32,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:32,663 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 04:15:32,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46211b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:32, skipping insertion in model container [2021-11-03 04:15:32,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:32,664 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:15:32,667 INFO L168 Benchmark]: Toolchain (without parser) took 869.24 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 101.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:32,667 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:15:32,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.46 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 101.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:32,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 864.46 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 101.3 MB in the end (delta: 5.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3164]: 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_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/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_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/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_1fb48ce3-b93e-4282-a88c-72ac417d019a/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 a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:34,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:34,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:34,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:35,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:35,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:35,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:35,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:35,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:35,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:35,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:35,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:35,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:35,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:35,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:35,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:35,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:35,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:35,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:35,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:35,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:35,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:35,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:35,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:35,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:35,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:35,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:35,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:35,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:35,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:35,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:35,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:35,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:35,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:35,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:35,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:35,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:35,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:35,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:35,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:35,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:35,100 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:15:35,158 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:35,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:35,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:35,160 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:35,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:35,161 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:35,161 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:35,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:35,161 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:35,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:35,164 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:35,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:35,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:35,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:35,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:35,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:35,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:35,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:15:35,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:15:35,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:35,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:35,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:35,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:35,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:35,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:15:35,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:35,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:35,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:35,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:35,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:35,169 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:15:35,170 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:15:35,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:35,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:35,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:35,171 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_1fb48ce3-b93e-4282-a88c-72ac417d019a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8dba55a6053d72f9111ac5cd147f9f45da0f79494b1facfa57c6480910007fb [2021-11-03 04:15:35,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:35,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:35,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:35,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:35,592 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:35,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-11-03 04:15:35,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/5789e41bc/46d32f61ceb74e888676f49f03d66b9f/FLAG41483bfee [2021-11-03 04:15:36,553 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:36,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c [2021-11-03 04:15:36,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/5789e41bc/46d32f61ceb74e888676f49f03d66b9f/FLAG41483bfee [2021-11-03 04:15:36,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/data/5789e41bc/46d32f61ceb74e888676f49f03d66b9f [2021-11-03 04:15:36,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:36,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:36,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:36,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:36,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:36,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:36" (1/1) ... [2021-11-03 04:15:36,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7a0091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:36, skipping insertion in model container [2021-11-03 04:15:36,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:36" (1/1) ... [2021-11-03 04:15:36,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:36,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:37,513 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_1fb48ce3-b93e-4282-a88c-72ac417d019a/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-11-03 04:15:37,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:37,624 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:15:37,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:37,750 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_1fb48ce3-b93e-4282-a88c-72ac417d019a/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-11-03 04:15:37,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:37,793 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:15:37,927 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_1fb48ce3-b93e-4282-a88c-72ac417d019a/sv-benchmarks/c/product-lines/elevator_spec2_product31.cil.c[64450,64463] [2021-11-03 04:15:37,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:37,986 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:15:37,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37 WrapperNode [2021-11-03 04:15:37,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:37,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:37,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:15:37,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:15:37,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:38,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:15:38,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:15:38,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:15:38,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:15:38,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:15:38,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:15:38,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:15:38,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (1/1) ... [2021-11-03 04:15:38,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:38,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:15:39,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:15:39,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:15:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:15:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:15:39,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:15:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:15:51,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:15:51,657 INFO L299 CfgBuilder]: Removed 893 assume(true) statements. [2021-11-03 04:15:51,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:15:51 BoogieIcfgContainer [2021-11-03 04:15:51,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:15:51,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:15:51,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:15:51,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:15:51,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:15:36" (1/3) ... [2021-11-03 04:15:51,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d31cd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:15:51, skipping insertion in model container [2021-11-03 04:15:51,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:37" (2/3) ... [2021-11-03 04:15:51,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d31cd5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:15:51, skipping insertion in model container [2021-11-03 04:15:51,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:15:51" (3/3) ... [2021-11-03 04:15:51,673 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product31.cil.c [2021-11-03 04:15:51,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:15:51,679 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:15:51,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:15:51,776 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 04:15:51,776 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:15:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 3676 states, 3670 states have (on average 1.8852861035422344) internal successors, (6919), 3675 states have internal predecessors, (6919), 0 states have call successors, (0), 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 04:15:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:15:51,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:51,910 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 04:15:51,911 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 04:15:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -210396081, now seen corresponding path program 1 times [2021-11-03 04:15:51,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:51,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855597309] [2021-11-03 04:15:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:51,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:51,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:51,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:51,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:15:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:52,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:15:52,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:52,506 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 04:15:52,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:52,597 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 04:15:52,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:52,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855597309] [2021-11-03 04:15:52,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855597309] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:52,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:52,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:15:52,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185388334] [2021-11-03 04:15:52,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:15:52,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:15:52,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:15:52,633 INFO L87 Difference]: Start difference. First operand has 3676 states, 3670 states have (on average 1.8852861035422344) internal successors, (6919), 3675 states have internal predecessors, (6919), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 04:15:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:52,795 INFO L93 Difference]: Finished difference Result 3695 states and 6942 transitions. [2021-11-03 04:15:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:15:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 04:15:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:52,852 INFO L225 Difference]: With dead ends: 3695 [2021-11-03 04:15:52,853 INFO L226 Difference]: Without dead ends: 3672 [2021-11-03 04:15:52,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 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 04:15:52,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-11-03 04:15:53,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3672. [2021-11-03 04:15:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3667 states have (on average 1.8835560403599674) internal successors, (6907), 3671 states have internal predecessors, (6907), 0 states have call successors, (0), 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 04:15:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 6907 transitions. [2021-11-03 04:15:53,084 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 6907 transitions. Word has length 44 [2021-11-03 04:15:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:53,085 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 6907 transitions. [2021-11-03 04:15:53,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 04:15:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 6907 transitions. [2021-11-03 04:15:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-03 04:15:53,090 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:53,091 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 04:15:53,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:53,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:53,314 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 04:15:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -71408258, now seen corresponding path program 1 times [2021-11-03 04:15:53,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:53,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85166667] [2021-11-03 04:15:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:53,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:53,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:53,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:53,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:15:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:53,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:15:53,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:53,912 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 04:15:53,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:54,072 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 04:15:54,073 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:54,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85166667] [2021-11-03 04:15:54,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85166667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:54,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:54,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:15:54,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845936386] [2021-11-03 04:15:54,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:15:54,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:15:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:15:54,077 INFO L87 Difference]: Start difference. First operand 3672 states and 6907 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 04:15:54,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:54,353 INFO L93 Difference]: Finished difference Result 7331 states and 13795 transitions. [2021-11-03 04:15:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:15:54,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 04:15:54,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:54,382 INFO L225 Difference]: With dead ends: 7331 [2021-11-03 04:15:54,382 INFO L226 Difference]: Without dead ends: 3672 [2021-11-03 04:15:54,391 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 04:15:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-11-03 04:15:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3672. [2021-11-03 04:15:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3667 states have (on average 1.8819198254704117) internal successors, (6901), 3671 states have internal predecessors, (6901), 0 states have call successors, (0), 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 04:15:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 6901 transitions. [2021-11-03 04:15:54,626 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 6901 transitions. Word has length 46 [2021-11-03 04:15:54,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:54,627 INFO L470 AbstractCegarLoop]: Abstraction has 3672 states and 6901 transitions. [2021-11-03 04:15:54,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 04:15:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 6901 transitions. [2021-11-03 04:15:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:15:54,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:54,632 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] [2021-11-03 04:15:54,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:54,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:54,852 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 04:15:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1495613832, now seen corresponding path program 1 times [2021-11-03 04:15:54,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:54,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770726389] [2021-11-03 04:15:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:54,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:54,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:54,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:15:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:55,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:15:55,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:55,354 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 04:15:55,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:55,508 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 04:15:55,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:55,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770726389] [2021-11-03 04:15:55,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770726389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:55,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:55,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:15:55,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671303155] [2021-11-03 04:15:55,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:15:55,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:55,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:15:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:15:55,516 INFO L87 Difference]: Start difference. First operand 3672 states and 6901 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 04:15:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:55,821 INFO L93 Difference]: Finished difference Result 7295 states and 13718 transitions. [2021-11-03 04:15:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:15:55,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 51 [2021-11-03 04:15:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:55,848 INFO L225 Difference]: With dead ends: 7295 [2021-11-03 04:15:55,848 INFO L226 Difference]: Without dead ends: 3645 [2021-11-03 04:15:55,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 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 04:15:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2021-11-03 04:15:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3645. [2021-11-03 04:15:56,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 3640 states have (on average 1.8804945054945055) internal successors, (6845), 3644 states have internal predecessors, (6845), 0 states have call successors, (0), 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 04:15:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 6845 transitions. [2021-11-03 04:15:56,022 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 6845 transitions. Word has length 51 [2021-11-03 04:15:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:56,022 INFO L470 AbstractCegarLoop]: Abstraction has 3645 states and 6845 transitions. [2021-11-03 04:15:56,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 04:15:56,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 6845 transitions. [2021-11-03 04:15:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 04:15:56,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:56,027 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 04:15:56,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 04:15:56,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:56,242 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 04:15:56,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1183731498, now seen corresponding path program 1 times [2021-11-03 04:15:56,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:56,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541364807] [2021-11-03 04:15:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:56,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:56,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:56,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:56,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:15:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:56,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:15:56,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:56,831 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 04:15:56,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:56,980 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 04:15:56,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:56,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541364807] [2021-11-03 04:15:56,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541364807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:56,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:56,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:15:56,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398173653] [2021-11-03 04:15:56,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:15:56,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:15:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:15:56,984 INFO L87 Difference]: Start difference. First operand 3645 states and 6845 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 04:15:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:57,297 INFO L93 Difference]: Finished difference Result 7268 states and 13662 transitions. [2021-11-03 04:15:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:15:57,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 04:15:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:57,324 INFO L225 Difference]: With dead ends: 7268 [2021-11-03 04:15:57,325 INFO L226 Difference]: Without dead ends: 3645 [2021-11-03 04:15:57,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 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 04:15:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2021-11-03 04:15:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3645. [2021-11-03 04:15:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 3640 states have (on average 1.8788461538461538) internal successors, (6839), 3644 states have internal predecessors, (6839), 0 states have call successors, (0), 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 04:15:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 6839 transitions. [2021-11-03 04:15:57,491 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 6839 transitions. Word has length 52 [2021-11-03 04:15:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:57,491 INFO L470 AbstractCegarLoop]: Abstraction has 3645 states and 6839 transitions. [2021-11-03 04:15:57,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 04:15:57,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 6839 transitions. [2021-11-03 04:15:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:15:57,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:57,496 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 04:15:57,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:57,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:57,711 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 04:15:57,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1567578683, now seen corresponding path program 1 times [2021-11-03 04:15:57,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:57,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816443841] [2021-11-03 04:15:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:57,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:57,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:57,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:15:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:15:58,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:15:58,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:15:58,379 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 04:15:58,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:15:58,578 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 04:15:58,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:15:58,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816443841] [2021-11-03 04:15:58,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816443841] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:15:58,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:15:58,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:15:58,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208267812] [2021-11-03 04:15:58,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:15:58,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:15:58,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:15:58,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:15:58,581 INFO L87 Difference]: Start difference. First operand 3645 states and 6839 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:15:59,234 INFO L93 Difference]: Finished difference Result 7262 states and 13645 transitions. [2021-11-03 04:15:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:15:59,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-03 04:15:59,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:15:59,264 INFO L225 Difference]: With dead ends: 7262 [2021-11-03 04:15:59,265 INFO L226 Difference]: Without dead ends: 3642 [2021-11-03 04:15:59,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 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 04:15:59,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2021-11-03 04:15:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 3642. [2021-11-03 04:15:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3637 states have (on average 1.878196315644762) internal successors, (6831), 3641 states have internal predecessors, (6831), 0 states have call successors, (0), 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 04:15:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 6831 transitions. [2021-11-03 04:15:59,542 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 6831 transitions. Word has length 57 [2021-11-03 04:15:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:15:59,543 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 6831 transitions. [2021-11-03 04:15:59,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:15:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 6831 transitions. [2021-11-03 04:15:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 04:15:59,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:15:59,549 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 04:15:59,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:15:59,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:15:59,771 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 04:15:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:15:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2108440587, now seen corresponding path program 1 times [2021-11-03 04:15:59,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:15:59,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529633851] [2021-11-03 04:15:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:15:59,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:15:59,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:15:59,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:15:59,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:16:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:00,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:16:00,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:00,497 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 04:16:00,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:00,728 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 04:16:00,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:00,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529633851] [2021-11-03 04:16:00,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529633851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:00,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:00,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:16:00,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232968871] [2021-11-03 04:16:00,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:00,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:00,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:00,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:00,731 INFO L87 Difference]: Start difference. First operand 3642 states and 6831 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:05,214 INFO L93 Difference]: Finished difference Result 12508 states and 23491 transitions. [2021-11-03 04:16:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:16:05,215 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-03 04:16:05,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:05,282 INFO L225 Difference]: With dead ends: 12508 [2021-11-03 04:16:05,283 INFO L226 Difference]: Without dead ends: 8897 [2021-11-03 04:16:05,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:05,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8897 states. [2021-11-03 04:16:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8897 to 3642. [2021-11-03 04:16:05,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3642 states, 3637 states have (on average 1.8149573824580698) internal successors, (6601), 3641 states have internal predecessors, (6601), 0 states have call successors, (0), 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 04:16:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3642 states to 3642 states and 6601 transitions. [2021-11-03 04:16:05,618 INFO L78 Accepts]: Start accepts. Automaton has 3642 states and 6601 transitions. Word has length 58 [2021-11-03 04:16:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:05,618 INFO L470 AbstractCegarLoop]: Abstraction has 3642 states and 6601 transitions. [2021-11-03 04:16:05,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3642 states and 6601 transitions. [2021-11-03 04:16:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 04:16:05,622 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:05,623 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:05,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:05,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:05,838 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 04:16:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash 776663799, now seen corresponding path program 1 times [2021-11-03 04:16:05,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:05,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206550516] [2021-11-03 04:16:05,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:05,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:05,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:05,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:05,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:16:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:06,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:16:06,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:06,629 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 04:16:06,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:06,854 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 04:16:06,855 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:06,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206550516] [2021-11-03 04:16:06,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206550516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:06,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:06,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:16:06,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684257655] [2021-11-03 04:16:06,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:06,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:06,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:06,859 INFO L87 Difference]: Start difference. First operand 3642 states and 6601 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:09,194 INFO L93 Difference]: Finished difference Result 9856 states and 18047 transitions. [2021-11-03 04:16:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:16:09,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-03 04:16:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:09,212 INFO L225 Difference]: With dead ends: 9856 [2021-11-03 04:16:09,212 INFO L226 Difference]: Without dead ends: 6272 [2021-11-03 04:16:09,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:16:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2021-11-03 04:16:09,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 3590. [2021-11-03 04:16:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3590 states, 3585 states have (on average 1.8156206415620642) internal successors, (6509), 3589 states have internal predecessors, (6509), 0 states have call successors, (0), 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 04:16:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 6509 transitions. [2021-11-03 04:16:09,444 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 6509 transitions. Word has length 66 [2021-11-03 04:16:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:09,445 INFO L470 AbstractCegarLoop]: Abstraction has 3590 states and 6509 transitions. [2021-11-03 04:16:09,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 6509 transitions. [2021-11-03 04:16:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-03 04:16:09,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:09,449 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] [2021-11-03 04:16:09,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:09,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:09,667 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 04:16:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -139224562, now seen corresponding path program 1 times [2021-11-03 04:16:09,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:09,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131097587] [2021-11-03 04:16:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:09,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:09,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:09,679 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:09,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:16:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:10,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:10,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:10,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:12,022 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 04:16:12,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:12,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131097587] [2021-11-03 04:16:12,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131097587] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:12,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:12,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:16:12,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225505729] [2021-11-03 04:16:12,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:12,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:12,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:12,025 INFO L87 Difference]: Start difference. First operand 3590 states and 6509 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 04:16:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:15,278 INFO L93 Difference]: Finished difference Result 11441 states and 20851 transitions. [2021-11-03 04:16:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:16:15,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 69 [2021-11-03 04:16:15,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:15,304 INFO L225 Difference]: With dead ends: 11441 [2021-11-03 04:16:15,305 INFO L226 Difference]: Without dead ends: 7901 [2021-11-03 04:16:15,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:16:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7901 states. [2021-11-03 04:16:15,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7901 to 5107. [2021-11-03 04:16:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5102 states have (on average 1.8126225009800079) internal successors, (9248), 5106 states have internal predecessors, (9248), 0 states have call successors, (0), 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 04:16:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 9248 transitions. [2021-11-03 04:16:15,655 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 9248 transitions. Word has length 69 [2021-11-03 04:16:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:15,655 INFO L470 AbstractCegarLoop]: Abstraction has 5107 states and 9248 transitions. [2021-11-03 04:16:15,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 04:16:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 9248 transitions. [2021-11-03 04:16:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:16:15,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:15,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:15,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:15,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:15,884 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 04:16:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2046494659, now seen corresponding path program 1 times [2021-11-03 04:16:15,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:15,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379368426] [2021-11-03 04:16:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:15,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:15,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:15,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:15,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:16:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:16,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:16,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:16,731 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 04:16:16,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:16,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:16,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379368426] [2021-11-03 04:16:16,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379368426] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:16,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:16,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:16:16,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927238024] [2021-11-03 04:16:16,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:16:16,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:16:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:16,979 INFO L87 Difference]: Start difference. First operand 5107 states and 9248 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:21,550 INFO L93 Difference]: Finished difference Result 20288 states and 37009 transitions. [2021-11-03 04:16:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:16:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-03 04:16:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:21,588 INFO L225 Difference]: With dead ends: 20288 [2021-11-03 04:16:21,589 INFO L226 Difference]: Without dead ends: 15230 [2021-11-03 04:16:21,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15230 states. [2021-11-03 04:16:21,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15230 to 5113. [2021-11-03 04:16:21,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5108 states have (on average 1.8116679718089272) internal successors, (9254), 5112 states have internal predecessors, (9254), 0 states have call successors, (0), 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 04:16:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 9254 transitions. [2021-11-03 04:16:22,003 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 9254 transitions. Word has length 70 [2021-11-03 04:16:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:22,004 INFO L470 AbstractCegarLoop]: Abstraction has 5113 states and 9254 transitions. [2021-11-03 04:16:22,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 9254 transitions. [2021-11-03 04:16:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:16:22,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:22,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:22,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:22,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:22,225 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 04:16:22,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:22,226 INFO L85 PathProgramCache]: Analyzing trace with hash -871832724, now seen corresponding path program 1 times [2021-11-03 04:16:22,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:22,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102049025] [2021-11-03 04:16:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:22,227 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:22,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:22,228 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:22,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:16:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:22,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:16:22,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:22,988 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 04:16:22,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:23,208 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 04:16:23,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:23,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102049025] [2021-11-03 04:16:23,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102049025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:23,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:23,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:16:23,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593150949] [2021-11-03 04:16:23,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:16:23,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:23,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:16:23,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:23,210 INFO L87 Difference]: Start difference. First operand 5113 states and 9254 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:32,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:32,246 INFO L93 Difference]: Finished difference Result 14310 states and 25972 transitions. [2021-11-03 04:16:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:16:32,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:16:32,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:32,275 INFO L225 Difference]: With dead ends: 14310 [2021-11-03 04:16:32,275 INFO L226 Difference]: Without dead ends: 10839 [2021-11-03 04:16:32,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2021-11-03 04:16:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 8862. [2021-11-03 04:16:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8862 states, 8857 states have (on average 1.8139324827819803) internal successors, (16066), 8861 states have internal predecessors, (16066), 0 states have call successors, (0), 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 04:16:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 16066 transitions. [2021-11-03 04:16:32,958 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 16066 transitions. Word has length 71 [2021-11-03 04:16:32,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:32,959 INFO L470 AbstractCegarLoop]: Abstraction has 8862 states and 16066 transitions. [2021-11-03 04:16:32,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:32,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 16066 transitions. [2021-11-03 04:16:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:16:32,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:32,966 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:32,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:33,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:33,184 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 04:16:33,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1882949974, now seen corresponding path program 1 times [2021-11-03 04:16:33,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:33,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538999067] [2021-11-03 04:16:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:33,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:33,187 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:33,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:16:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:16:33,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:33,983 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 04:16:33,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:34,218 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 04:16:34,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:34,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538999067] [2021-11-03 04:16:34,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538999067] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:34,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:34,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:16:34,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175050680] [2021-11-03 04:16:34,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:16:34,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:16:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:16:34,221 INFO L87 Difference]: Start difference. First operand 8862 states and 16066 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:37,733 INFO L93 Difference]: Finished difference Result 18667 states and 33884 transitions. [2021-11-03 04:16:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:16:37,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:16:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:37,761 INFO L225 Difference]: With dead ends: 18667 [2021-11-03 04:16:37,762 INFO L226 Difference]: Without dead ends: 11432 [2021-11-03 04:16:37,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:37,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11432 states. [2021-11-03 04:16:38,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 8876. [2021-11-03 04:16:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8876 states, 8871 states have (on average 1.7773644459474693) internal successors, (15767), 8875 states have internal predecessors, (15767), 0 states have call successors, (0), 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 04:16:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8876 states to 8876 states and 15767 transitions. [2021-11-03 04:16:38,394 INFO L78 Accepts]: Start accepts. Automaton has 8876 states and 15767 transitions. Word has length 71 [2021-11-03 04:16:38,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:38,395 INFO L470 AbstractCegarLoop]: Abstraction has 8876 states and 15767 transitions. [2021-11-03 04:16:38,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8876 states and 15767 transitions. [2021-11-03 04:16:38,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:16:38,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:38,399 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:38,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:38,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:38,618 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 04:16:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:38,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2106131932, now seen corresponding path program 1 times [2021-11-03 04:16:38,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:38,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202164986] [2021-11-03 04:16:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:38,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:38,620 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:38,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:16:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:39,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:39,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:39,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:39,705 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 04:16:39,705 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:39,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202164986] [2021-11-03 04:16:39,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202164986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:39,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:39,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:16:39,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457909375] [2021-11-03 04:16:39,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:16:39,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:16:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:39,707 INFO L87 Difference]: Start difference. First operand 8876 states and 15767 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:42,366 INFO L93 Difference]: Finished difference Result 60108 states and 107541 transitions. [2021-11-03 04:16:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:16:42,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:16:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:42,491 INFO L225 Difference]: With dead ends: 60108 [2021-11-03 04:16:42,492 INFO L226 Difference]: Without dead ends: 51277 [2021-11-03 04:16:42,509 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:16:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51277 states. [2021-11-03 04:16:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51277 to 13864. [2021-11-03 04:16:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13864 states, 13859 states have (on average 1.7865646872068692) internal successors, (24760), 13863 states have internal predecessors, (24760), 0 states have call successors, (0), 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 04:16:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13864 states to 13864 states and 24760 transitions. [2021-11-03 04:16:43,889 INFO L78 Accepts]: Start accepts. Automaton has 13864 states and 24760 transitions. Word has length 73 [2021-11-03 04:16:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:43,889 INFO L470 AbstractCegarLoop]: Abstraction has 13864 states and 24760 transitions. [2021-11-03 04:16:43,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 13864 states and 24760 transitions. [2021-11-03 04:16:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:16:43,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:43,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:43,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:44,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:44,110 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 04:16:44,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2116448806, now seen corresponding path program 1 times [2021-11-03 04:16:44,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:44,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391159278] [2021-11-03 04:16:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:44,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:44,113 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:44,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:16:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:44,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:16:44,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:44,988 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 04:16:44,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:45,214 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 04:16:45,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:45,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391159278] [2021-11-03 04:16:45,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391159278] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:45,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:45,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:16:45,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888895482] [2021-11-03 04:16:45,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:45,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:45,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:45,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:45,217 INFO L87 Difference]: Start difference. First operand 13864 states and 24760 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:47,674 INFO L93 Difference]: Finished difference Result 31121 states and 55875 transitions. [2021-11-03 04:16:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:16:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:16:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:47,713 INFO L225 Difference]: With dead ends: 31121 [2021-11-03 04:16:47,713 INFO L226 Difference]: Without dead ends: 22187 [2021-11-03 04:16:47,728 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:16:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22187 states. [2021-11-03 04:16:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22187 to 13844. [2021-11-03 04:16:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13844 states, 13839 states have (on average 1.7862562323867333) internal successors, (24720), 13843 states have internal predecessors, (24720), 0 states have call successors, (0), 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 04:16:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13844 states to 13844 states and 24720 transitions. [2021-11-03 04:16:48,717 INFO L78 Accepts]: Start accepts. Automaton has 13844 states and 24720 transitions. Word has length 73 [2021-11-03 04:16:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:48,717 INFO L470 AbstractCegarLoop]: Abstraction has 13844 states and 24720 transitions. [2021-11-03 04:16:48,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 04:16:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 13844 states and 24720 transitions. [2021-11-03 04:16:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 04:16:48,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:48,722 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 04:16:48,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:16:48,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:48,942 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 04:16:48,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:48,942 INFO L85 PathProgramCache]: Analyzing trace with hash 771544452, now seen corresponding path program 1 times [2021-11-03 04:16:48,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:48,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188995320] [2021-11-03 04:16:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:48,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:48,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:48,945 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:48,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:16:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:49,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:16:49,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:49,991 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 04:16:49,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:50,261 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 04:16:50,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:50,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188995320] [2021-11-03 04:16:50,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188995320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:50,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:50,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:16:50,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759754609] [2021-11-03 04:16:50,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:50,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:50,265 INFO L87 Difference]: Start difference. First operand 13844 states and 24720 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 04:16:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:51,618 INFO L93 Difference]: Finished difference Result 35656 states and 63731 transitions. [2021-11-03 04:16:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:51,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 04:16:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:51,658 INFO L225 Difference]: With dead ends: 35656 [2021-11-03 04:16:51,658 INFO L226 Difference]: Without dead ends: 23712 [2021-11-03 04:16:51,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23712 states. [2021-11-03 04:16:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23712 to 23697. [2021-11-03 04:16:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23697 states, 23692 states have (on average 1.7921661320276887) internal successors, (42460), 23696 states have internal predecessors, (42460), 0 states have call successors, (0), 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 04:16:53,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23697 states to 23697 states and 42460 transitions. [2021-11-03 04:16:53,281 INFO L78 Accepts]: Start accepts. Automaton has 23697 states and 42460 transitions. Word has length 80 [2021-11-03 04:16:53,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:53,282 INFO L470 AbstractCegarLoop]: Abstraction has 23697 states and 42460 transitions. [2021-11-03 04:16:53,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 04:16:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 23697 states and 42460 transitions. [2021-11-03 04:16:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 04:16:53,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:53,285 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 04:16:53,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:53,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:53,485 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:16:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1922627661, now seen corresponding path program 1 times [2021-11-03 04:16:53,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:53,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226980305] [2021-11-03 04:16:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:53,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:53,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:53,489 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:53,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:16:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:54,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:16:54,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:54,484 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 04:16:54,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:54,715 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 04:16:54,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:54,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226980305] [2021-11-03 04:16:54,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226980305] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:54,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:54,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:16:54,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713686345] [2021-11-03 04:16:54,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:54,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:54,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:54,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:54,718 INFO L87 Difference]: Start difference. First operand 23697 states and 42460 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:57,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:57,071 INFO L93 Difference]: Finished difference Result 63902 states and 114486 transitions. [2021-11-03 04:16:57,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:57,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-03 04:16:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:57,365 INFO L225 Difference]: With dead ends: 63902 [2021-11-03 04:16:57,366 INFO L226 Difference]: Without dead ends: 43222 [2021-11-03 04:16:57,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:57,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43222 states. [2021-11-03 04:16:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43222 to 43207. [2021-11-03 04:16:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43207 states, 43202 states have (on average 1.795125225683996) internal successors, (77553), 43206 states have internal predecessors, (77553), 0 states have call successors, (0), 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 04:16:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43207 states to 43207 states and 77553 transitions. [2021-11-03 04:16:59,819 INFO L78 Accepts]: Start accepts. Automaton has 43207 states and 77553 transitions. Word has length 81 [2021-11-03 04:16:59,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:59,820 INFO L470 AbstractCegarLoop]: Abstraction has 43207 states and 77553 transitions. [2021-11-03 04:16:59,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:16:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 43207 states and 77553 transitions. [2021-11-03 04:16:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:16:59,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:59,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:59,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:00,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:00,027 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:00,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash 122348991, now seen corresponding path program 1 times [2021-11-03 04:17:00,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:00,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284433939] [2021-11-03 04:17:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:00,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:00,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:00,030 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:00,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:17:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:00,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:17:00,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:01,103 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 04:17:01,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:01,363 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 04:17:01,363 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:01,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284433939] [2021-11-03 04:17:01,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284433939] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:01,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:01,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:17:01,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704221003] [2021-11-03 04:17:01,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:17:01,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:17:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:17:01,366 INFO L87 Difference]: Start difference. First operand 43207 states and 77553 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:05,578 INFO L93 Difference]: Finished difference Result 120002 states and 215173 transitions. [2021-11-03 04:17:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:17:05,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 04:17:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:05,705 INFO L225 Difference]: With dead ends: 120002 [2021-11-03 04:17:05,705 INFO L226 Difference]: Without dead ends: 81820 [2021-11-03 04:17:05,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:17:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81820 states. [2021-11-03 04:17:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81820 to 81805. [2021-11-03 04:17:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81805 states, 81800 states have (on average 1.795476772616137) internal successors, (146870), 81804 states have internal predecessors, (146870), 0 states have call successors, (0), 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 04:17:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81805 states to 81805 states and 146870 transitions. [2021-11-03 04:17:10,692 INFO L78 Accepts]: Start accepts. Automaton has 81805 states and 146870 transitions. Word has length 82 [2021-11-03 04:17:10,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:10,692 INFO L470 AbstractCegarLoop]: Abstraction has 81805 states and 146870 transitions. [2021-11-03 04:17:10,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 81805 states and 146870 transitions. [2021-11-03 04:17:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 04:17:10,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:10,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:10,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:10,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:10,897 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:17:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1242918002, now seen corresponding path program 1 times [2021-11-03 04:17:10,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:10,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572673293] [2021-11-03 04:17:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:10,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:10,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:10,899 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:10,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fb48ce3-b93e-4282-a88c-72ac417d019a/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:17:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:11,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:17:11,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:11,997 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 04:17:11,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:12,261 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 04:17:12,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:12,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572673293] [2021-11-03 04:17:12,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572673293] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:12,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:12,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:17:12,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898130818] [2021-11-03 04:17:12,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:17:12,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:12,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:17:12,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:17:12,264 INFO L87 Difference]: Start difference. First operand 81805 states and 146870 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:17:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:20,299 INFO L93 Difference]: Finished difference Result 231358 states and 414700 transitions. [2021-11-03 04:17:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:17:20,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-03 04:17:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:20,750 INFO L225 Difference]: With dead ends: 231358 [2021-11-03 04:17:20,750 INFO L226 Difference]: Without dead ends: 158142 [2021-11-03 04:17:20,819 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:17:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158142 states.