./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:15:53,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:15:53,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:15:53,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:15:53,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:15:53,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:15:53,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:15:53,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:15:53,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:15:53,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:15:53,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:15:53,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:15:53,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:15:53,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:15:53,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:15:53,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:15:53,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:15:53,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:15:53,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:15:53,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:15:53,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:15:53,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:15:53,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:15:53,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:15:53,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:15:53,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:15:53,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:15:53,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:15:53,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:15:53,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:15:53,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:15:53,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:15:53,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:15:53,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:15:53,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:15:53,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:15:53,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:15:53,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:15:53,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:15:53,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:15:53,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:15:53,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:15:53,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:15:53,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:15:53,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:15:53,553 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:15:53,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:15:53,553 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:15:53,554 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:15:53,554 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:15:53,554 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:15:53,554 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:15:53,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:15:53,555 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:15:53,555 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:15:53,555 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:15:53,556 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:15:53,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:15:53,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:15:53,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:15:53,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:15:53,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:15:53,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:15:53,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:15:53,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:15:53,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:15:53,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:15:53,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:15:53,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:15:53,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:15:53,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:15:53,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:15:53,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:15:53,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:15:53,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:15:53,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:15:53,561 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:15:53,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:15:53,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:15:53,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:15:53,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:15:53,562 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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2021-11-03 05:15:53,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:15:53,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:15:53,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:15:53,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:15:53,813 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:15:53,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-03 05:15:53,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/2d7ebad38/8c0866ce02554d0d9f94d286462ec7d4/FLAG7190f654b [2021-11-03 05:15:54,662 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:15:54,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-03 05:15:54,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/2d7ebad38/8c0866ce02554d0d9f94d286462ec7d4/FLAG7190f654b [2021-11-03 05:15:54,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/2d7ebad38/8c0866ce02554d0d9f94d286462ec7d4 [2021-11-03 05:15:54,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:15:54,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:15:54,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:15:54,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:15:54,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:15:54,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:15:54" (1/1) ... [2021-11-03 05:15:54,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237c9098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:54, skipping insertion in model container [2021-11-03 05:15:54,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:15:54" (1/1) ... [2021-11-03 05:15:54,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:15:54,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:15:55,438 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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-03 05:15:55,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:15:55,507 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 05:15:55,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c3abfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:55, skipping insertion in model container [2021-11-03 05:15:55,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:15:55,509 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:15:55,511 INFO L168 Benchmark]: Toolchain (without parser) took 710.15 ms. Allocated memory is still 107.0 MB. Free memory was 70.7 MB in the beginning and 68.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:15:55,513 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 107.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:15:55,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.61 ms. Allocated memory is still 107.0 MB. Free memory was 70.5 MB in the beginning and 68.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 05:15:55,516 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 107.0 MB. Free memory is still 60.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 707.61 ms. Allocated memory is still 107.0 MB. Free memory was 70.5 MB in the beginning and 68.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 452]: 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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:15:57,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:15:57,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:15:57,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:15:57,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:15:57,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:15:57,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:15:57,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:15:57,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:15:57,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:15:57,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:15:57,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:15:57,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:15:57,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:15:57,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:15:57,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:15:57,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:15:57,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:15:57,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:15:57,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:15:57,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:15:57,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:15:57,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:15:57,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:15:57,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:15:57,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:15:57,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:15:57,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:15:57,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:15:57,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:15:57,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:15:57,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:15:57,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:15:57,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:15:57,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:15:57,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:15:57,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:15:57,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:15:57,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:15:57,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:15:57,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:15:57,855 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:15:57,897 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:15:57,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:15:57,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:15:57,900 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:15:57,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:15:57,900 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:15:57,900 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:15:57,900 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:15:57,901 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:15:57,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:15:57,903 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:15:57,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:15:57,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:15:57,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:15:57,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:15:57,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:15:57,904 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:15:57,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:15:57,905 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:15:57,905 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:15:57,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:15:57,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:15:57,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:15:57,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:15:57,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:15:57,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:15:57,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:15:57,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:15:57,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:15:57,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:15:57,907 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:15:57,908 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:15:57,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:15:57,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:15:57,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:15:57,909 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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2021-11-03 05:15:58,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:15:58,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:15:58,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:15:58,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:15:58,318 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:15:58,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-03 05:15:58,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/16a911deb/ff317ab77ba445ac8a97c6a73c281589/FLAG8dfcf464b [2021-11-03 05:15:59,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:15:59,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2021-11-03 05:15:59,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/16a911deb/ff317ab77ba445ac8a97c6a73c281589/FLAG8dfcf464b [2021-11-03 05:15:59,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/data/16a911deb/ff317ab77ba445ac8a97c6a73c281589 [2021-11-03 05:15:59,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:15:59,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:15:59,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:15:59,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:15:59,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:15:59,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:15:59" (1/1) ... [2021-11-03 05:15:59,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c755dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:15:59, skipping insertion in model container [2021-11-03 05:15:59,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:15:59" (1/1) ... [2021-11-03 05:15:59,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:15:59,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:00,114 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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-03 05:16:00,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:00,156 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:16:00,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:16:00,252 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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-03 05:16:00,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:00,271 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:16:00,347 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_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2021-11-03 05:16:00,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:16:00,411 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:16:00,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00 WrapperNode [2021-11-03 05:16:00,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:16:00,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:00,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:16:00,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:16:00,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:00,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:00,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:16:00,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:16:00,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:16:00,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:16:00,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:00,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:00,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:00,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:01,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:01,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:01,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:01,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:16:01,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:16:01,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:16:01,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:16:01,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (1/1) ... [2021-11-03 05:16:01,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:16:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:16:01,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:16:01,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:16:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:16:01,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:16:01,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:16:01,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:16:16,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:16:16,348 INFO L299 CfgBuilder]: Removed 1497 assume(true) statements. [2021-11-03 05:16:16,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:16 BoogieIcfgContainer [2021-11-03 05:16:16,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:16:16,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:16:16,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:16:16,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:16:16,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:15:59" (1/3) ... [2021-11-03 05:16:16,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2face66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:16, skipping insertion in model container [2021-11-03 05:16:16,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:16:00" (2/3) ... [2021-11-03 05:16:16,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2face66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:16:16, skipping insertion in model container [2021-11-03 05:16:16,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:16:16" (3/3) ... [2021-11-03 05:16:16,439 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2021-11-03 05:16:16,445 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:16:16,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 05:16:16,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:16:16,547 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 05:16:16,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 05:16:16,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 6303 states, 6292 states have (on average 1.8857279084551812) internal successors, (11865), 6302 states have internal predecessors, (11865), 0 states have call successors, (0), 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 05:16:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 05:16:16,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:16,729 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] [2021-11-03 05:16:16,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2044090443, now seen corresponding path program 1 times [2021-11-03 05:16:16,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:16,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521969173] [2021-11-03 05:16:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:16,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:16,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:16,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:16,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:16:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:17,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:16:17,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:17,379 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 05:16:17,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:17,560 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 05:16:17,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:17,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521969173] [2021-11-03 05:16:17,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521969173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:17,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:17,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:16:17,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971249128] [2021-11-03 05:16:17,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:16:17,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:16:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:16:17,608 INFO L87 Difference]: Start difference. First operand has 6303 states, 6292 states have (on average 1.8857279084551812) internal successors, (11865), 6302 states have internal predecessors, (11865), 0 states have call successors, (0), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:20,204 INFO L93 Difference]: Finished difference Result 43743 states and 82336 transitions. [2021-11-03 05:16:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:16:20,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-03 05:16:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:20,441 INFO L225 Difference]: With dead ends: 43743 [2021-11-03 05:16:20,441 INFO L226 Difference]: Without dead ends: 37441 [2021-11-03 05:16:20,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:16:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37441 states. [2021-11-03 05:16:20,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37441 to 6315. [2021-11-03 05:16:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 6305 states have (on average 1.8813639968279143) internal successors, (11862), 6314 states have internal predecessors, (11862), 0 states have call successors, (0), 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 05:16:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 11862 transitions. [2021-11-03 05:16:21,020 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 11862 transitions. Word has length 47 [2021-11-03 05:16:21,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:21,021 INFO L470 AbstractCegarLoop]: Abstraction has 6315 states and 11862 transitions. [2021-11-03 05:16:21,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 11862 transitions. [2021-11-03 05:16:21,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 05:16:21,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:21,027 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] [2021-11-03 05:16:21,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:21,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:21,241 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:21,242 INFO L85 PathProgramCache]: Analyzing trace with hash 334888117, now seen corresponding path program 1 times [2021-11-03 05:16:21,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:21,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154563189] [2021-11-03 05:16:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:21,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:21,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:21,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:21,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:16:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:21,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:21,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:21,762 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 05:16:21,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:21,888 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 05:16:21,889 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:21,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154563189] [2021-11-03 05:16:21,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154563189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:21,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:21,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:16:21,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459385152] [2021-11-03 05:16:21,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:16:21,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:16:21,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:21,892 INFO L87 Difference]: Start difference. First operand 6315 states and 11862 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 05:16:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:22,227 INFO L93 Difference]: Finished difference Result 12542 states and 23567 transitions. [2021-11-03 05:16:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-03 05:16:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:22,245 INFO L225 Difference]: With dead ends: 12542 [2021-11-03 05:16:22,245 INFO L226 Difference]: Without dead ends: 6241 [2021-11-03 05:16:22,254 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 05:16:22,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-11-03 05:16:22,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6241. [2021-11-03 05:16:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6241 states, 6231 states have (on average 1.8805970149253732) internal successors, (11718), 6240 states have internal predecessors, (11718), 0 states have call successors, (0), 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 05:16:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 11718 transitions. [2021-11-03 05:16:22,609 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 11718 transitions. Word has length 49 [2021-11-03 05:16:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:22,609 INFO L470 AbstractCegarLoop]: Abstraction has 6241 states and 11718 transitions. [2021-11-03 05:16:22,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 05:16:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 11718 transitions. [2021-11-03 05:16:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 05:16:22,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:22,613 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 05:16:22,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:22,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:22,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:22,838 INFO L85 PathProgramCache]: Analyzing trace with hash -262441261, now seen corresponding path program 1 times [2021-11-03 05:16:22,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:22,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100876806] [2021-11-03 05:16:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:22,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:22,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:22,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:22,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:16:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:23,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 05:16:23,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:23,404 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 05:16:23,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:23,577 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 05:16:23,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:23,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100876806] [2021-11-03 05:16:23,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100876806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:23,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:23,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:16:23,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278257654] [2021-11-03 05:16:23,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:16:23,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:23,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:16:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:16:23,581 INFO L87 Difference]: Start difference. First operand 6241 states and 11718 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:24,103 INFO L93 Difference]: Finished difference Result 12456 states and 23399 transitions. [2021-11-03 05:16:24,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:16:24,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 05:16:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:24,120 INFO L225 Difference]: With dead ends: 12456 [2021-11-03 05:16:24,120 INFO L226 Difference]: Without dead ends: 6241 [2021-11-03 05:16:24,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:16:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-11-03 05:16:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6241. [2021-11-03 05:16:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6241 states, 6231 states have (on average 1.878992136093725) internal successors, (11708), 6240 states have internal predecessors, (11708), 0 states have call successors, (0), 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 05:16:24,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6241 states to 6241 states and 11708 transitions. [2021-11-03 05:16:24,468 INFO L78 Accepts]: Start accepts. Automaton has 6241 states and 11708 transitions. Word has length 51 [2021-11-03 05:16:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:24,469 INFO L470 AbstractCegarLoop]: Abstraction has 6241 states and 11708 transitions. [2021-11-03 05:16:24,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 6241 states and 11708 transitions. [2021-11-03 05:16:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 05:16:24,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:24,474 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] [2021-11-03 05:16:24,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:24,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:24,695 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:24,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash -598931043, now seen corresponding path program 1 times [2021-11-03 05:16:24,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:24,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181794441] [2021-11-03 05:16:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:24,699 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:24,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:24,700 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:24,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:16:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:25,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:16:25,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:25,302 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 05:16:25,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:25,514 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 05:16:25,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:25,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181794441] [2021-11-03 05:16:25,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181794441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:25,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:25,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:16:25,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950402075] [2021-11-03 05:16:25,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:16:25,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:16:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:16:25,518 INFO L87 Difference]: Start difference. First operand 6241 states and 11708 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 05:16:33,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:33,074 INFO L93 Difference]: Finished difference Result 27996 states and 52109 transitions. [2021-11-03 05:16:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 05:16:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 55 [2021-11-03 05:16:33,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:33,145 INFO L225 Difference]: With dead ends: 27996 [2021-11-03 05:16:33,145 INFO L226 Difference]: Without dead ends: 21825 [2021-11-03 05:16:33,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:16:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21825 states. [2021-11-03 05:16:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21825 to 10969. [2021-11-03 05:16:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 10959 states have (on average 1.8787298111141528) internal successors, (20589), 10968 states have internal predecessors, (20589), 0 states have call successors, (0), 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 05:16:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 20589 transitions. [2021-11-03 05:16:33,754 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 20589 transitions. Word has length 55 [2021-11-03 05:16:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:33,754 INFO L470 AbstractCegarLoop]: Abstraction has 10969 states and 20589 transitions. [2021-11-03 05:16:33,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 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 05:16:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 20589 transitions. [2021-11-03 05:16:33,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 05:16:33,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:33,757 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] [2021-11-03 05:16:33,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:33,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:33,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:33,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:33,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1358521118, now seen corresponding path program 1 times [2021-11-03 05:16:33,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:33,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489722260] [2021-11-03 05:16:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:33,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:33,979 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:33,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:16:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:34,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:16:34,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:34,627 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 05:16:34,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:34,798 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 05:16:34,798 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:34,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489722260] [2021-11-03 05:16:34,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489722260] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:34,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:34,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:16:34,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879516191] [2021-11-03 05:16:34,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:16:34,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:16:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:16:34,801 INFO L87 Difference]: Start difference. First operand 10969 states and 20589 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 05:16:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:38,709 INFO L93 Difference]: Finished difference Result 91050 states and 171038 transitions. [2021-11-03 05:16:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 05:16:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-03 05:16:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:38,947 INFO L225 Difference]: With dead ends: 91050 [2021-11-03 05:16:38,947 INFO L226 Difference]: Without dead ends: 80151 [2021-11-03 05:16:38,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 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 05:16:39,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80151 states. [2021-11-03 05:16:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80151 to 20603. [2021-11-03 05:16:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20603 states, 20593 states have (on average 1.8777254406837274) internal successors, (38668), 20602 states have internal predecessors, (38668), 0 states have call successors, (0), 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 05:16:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20603 states to 20603 states and 38668 transitions. [2021-11-03 05:16:40,497 INFO L78 Accepts]: Start accepts. Automaton has 20603 states and 38668 transitions. Word has length 55 [2021-11-03 05:16:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:40,497 INFO L470 AbstractCegarLoop]: Abstraction has 20603 states and 38668 transitions. [2021-11-03 05:16:40,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 05:16:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 20603 states and 38668 transitions. [2021-11-03 05:16:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 05:16:40,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:40,500 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:40,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:40,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:40,719 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash 491221222, now seen corresponding path program 1 times [2021-11-03 05:16:40,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:40,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615918092] [2021-11-03 05:16:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:40,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:40,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:40,723 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:40,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:16:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:41,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:41,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:41,342 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 05:16:41,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:41,478 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 05:16:41,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:41,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615918092] [2021-11-03 05:16:41,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615918092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:41,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:41,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:16:41,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754082934] [2021-11-03 05:16:41,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:16:41,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:16:41,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:16:41,481 INFO L87 Difference]: Start difference. First operand 20603 states and 38668 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 05:16:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:43,055 INFO L93 Difference]: Finished difference Result 60809 states and 114130 transitions. [2021-11-03 05:16:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:16:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 56 [2021-11-03 05:16:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:43,129 INFO L225 Difference]: With dead ends: 60809 [2021-11-03 05:16:43,129 INFO L226 Difference]: Without dead ends: 40238 [2021-11-03 05:16:43,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 05:16:43,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40238 states. [2021-11-03 05:16:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40238 to 20479. [2021-11-03 05:16:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20479 states, 20469 states have (on average 1.876984708583712) internal successors, (38420), 20478 states have internal predecessors, (38420), 0 states have call successors, (0), 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 05:16:44,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20479 states to 20479 states and 38420 transitions. [2021-11-03 05:16:44,287 INFO L78 Accepts]: Start accepts. Automaton has 20479 states and 38420 transitions. Word has length 56 [2021-11-03 05:16:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:44,287 INFO L470 AbstractCegarLoop]: Abstraction has 20479 states and 38420 transitions. [2021-11-03 05:16:44,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 05:16:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 20479 states and 38420 transitions. [2021-11-03 05:16:44,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 05:16:44,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:44,290 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:44,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:44,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:44,507 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -136862999, now seen corresponding path program 1 times [2021-11-03 05:16:44,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:44,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999513710] [2021-11-03 05:16:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:44,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:44,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:44,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:44,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:16:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:44,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:16:44,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:45,096 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 05:16:45,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:45,269 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 05:16:45,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:45,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999513710] [2021-11-03 05:16:45,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999513710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:45,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:45,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:16:45,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343774543] [2021-11-03 05:16:45,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:16:45,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:16:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:16:45,271 INFO L87 Difference]: Start difference. First operand 20479 states and 38420 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:54,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:16:54,819 INFO L93 Difference]: Finished difference Result 77905 states and 145713 transitions. [2021-11-03 05:16:54,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:16:54,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 05:16:54,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:16:54,923 INFO L225 Difference]: With dead ends: 77905 [2021-11-03 05:16:54,924 INFO L226 Difference]: Without dead ends: 57460 [2021-11-03 05:16:54,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:16:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57460 states. [2021-11-03 05:16:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57460 to 39885. [2021-11-03 05:16:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39885 states, 39875 states have (on average 1.8596363636363635) internal successors, (74153), 39884 states have internal predecessors, (74153), 0 states have call successors, (0), 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 05:16:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39885 states to 39885 states and 74153 transitions. [2021-11-03 05:16:56,647 INFO L78 Accepts]: Start accepts. Automaton has 39885 states and 74153 transitions. Word has length 56 [2021-11-03 05:16:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:16:56,647 INFO L470 AbstractCegarLoop]: Abstraction has 39885 states and 74153 transitions. [2021-11-03 05:16:56,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:16:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 39885 states and 74153 transitions. [2021-11-03 05:16:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:16:56,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:16:56,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:16:56,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:16:56,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:16:56,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:16:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:16:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash -424208374, now seen corresponding path program 1 times [2021-11-03 05:16:56,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:16:56,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699388983] [2021-11-03 05:16:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:16:56,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:16:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:16:56,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:16:56,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:16:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:16:57,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:16:57,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:16:57,452 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 05:16:57,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:16:57,568 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 05:16:57,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:16:57,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699388983] [2021-11-03 05:16:57,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699388983] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:16:57,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:16:57,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:16:57,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549434401] [2021-11-03 05:16:57,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:16:57,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:16:57,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:16:57,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:16:57,571 INFO L87 Difference]: Start difference. First operand 39885 states and 74153 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:01,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:17:01,626 INFO L93 Difference]: Finished difference Result 156174 states and 290435 transitions. [2021-11-03 05:17:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:17:01,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-03 05:17:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:17:01,819 INFO L225 Difference]: With dead ends: 156174 [2021-11-03 05:17:01,820 INFO L226 Difference]: Without dead ends: 116326 [2021-11-03 05:17:02,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 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 05:17:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116326 states. [2021-11-03 05:17:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116326 to 39771. [2021-11-03 05:17:03,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39771 states, 39761 states have (on average 1.8541535675662082) internal successors, (73723), 39770 states have internal predecessors, (73723), 0 states have call successors, (0), 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 05:17:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39771 states to 39771 states and 73723 transitions. [2021-11-03 05:17:04,052 INFO L78 Accepts]: Start accepts. Automaton has 39771 states and 73723 transitions. Word has length 59 [2021-11-03 05:17:04,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:17:04,052 INFO L470 AbstractCegarLoop]: Abstraction has 39771 states and 73723 transitions. [2021-11-03 05:17:04,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:17:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 39771 states and 73723 transitions. [2021-11-03 05:17:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 05:17:04,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:17:04,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:17:04,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:17:04,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:17:04,266 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 05:17:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:17:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash -895008859, now seen corresponding path program 1 times [2021-11-03 05:17:04,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:17:04,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694594815] [2021-11-03 05:17:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:17:04,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:17:04,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:17:04,269 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:17:04,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bfe5778-5c87-4cf2-9f67-a1a04943f7ab/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:17:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:17:04,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:17:04,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:17:04,918 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 05:17:04,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:17:05,099 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 05:17:05,100 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:17:05,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694594815] [2021-11-03 05:17:05,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694594815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:17:05,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:17:05,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:17:05,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947097880] [2021-11-03 05:17:05,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:17:05,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:17:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:17:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:17:05,102 INFO L87 Difference]: Start difference. First operand 39771 states and 73723 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)